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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.04529">arXiv:2407.04529</a> <span> [<a href="https://arxiv.org/pdf/2407.04529">pdf</a>, <a href="https://arxiv.org/format/2407.04529">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2024.138828">10.1016/j.physletb.2024.138828 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+P+J">P. J. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+S">S. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Chazono%2C+Y">Y. Chazono</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+B+S">B. S. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Utsuno%2C+Y">Y. Utsuno</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+N+L">N. L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J">J-M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Giganon%2C+A">A. Giganon</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Hilaire%2C+C">C. Hilaire</a> , et al. (63 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.04529v1-abstract-short" style="display: inline;"> The calcium isotopes are an ideal system to investigate the evolution of shell structure and magic numbers. Although the properties of surface nucleons in calcium have been well studied, probing the structure of deeply bound nucleons remains a challenge. Here, we report on the first measurement of unbound states in $^{53}$Ca and $^{55}$Ca, populated from \ts{54,56}Ca($p,pn$) reactions at a beam en… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.04529v1-abstract-full').style.display = 'inline'; document.getElementById('2407.04529v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.04529v1-abstract-full" style="display: none;"> The calcium isotopes are an ideal system to investigate the evolution of shell structure and magic numbers. Although the properties of surface nucleons in calcium have been well studied, probing the structure of deeply bound nucleons remains a challenge. Here, we report on the first measurement of unbound states in $^{53}$Ca and $^{55}$Ca, populated from \ts{54,56}Ca($p,pn$) reactions at a beam energy of around 216 MeV/nucleon at the RIKEN Radioactive Isotopes Beam Factory. The resonance properties, partial cross sections, and momentum distributions of these unbound states were analyzed. Orbital angular momentum $l$ assignments were extracted from momentum distributions based on calculations using the distorted wave impulse approximation (DWIA) reaction model. The resonances at excitation energies of 5516(41)\,keV in $^{53}$Ca and 6000(250)\,keV in $^{55}$Ca indicate a significant $l$\, =\,3 component, providing the first experimental evidence for the $谓0f_{7/2}$ single-particle strength of unbound hole states in the neutron-rich Ca isotopes. The observed excitation energies and cross-sections point towards extremely localized and well separated strength distributions, with some fragmentation for the $谓0f_{7/2}$ orbital in $^{55}$Ca. These results are in good agreement with predictions from shell-model calculations using the effective GXPF1Bs interaction and \textit{ab initio} calculations and diverge markedly from the experimental distributions in the nickel isotones at $Z=28$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.04529v1-abstract-full').style.display = 'none'; document.getElementById('2407.04529v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B, 855 (2024),138828 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.04115">arXiv:2404.04115</a> <span> [<a href="https://arxiv.org/pdf/2404.04115">pdf</a>, <a href="https://arxiv.org/format/2404.04115">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.110.014617">10.1103/PhysRevC.110.014617 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Significance of the refraction effect on the $p$-$d$ elementary process in the ($p$,$pd$) reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Chazono%2C+Y">Yoshiki Chazono</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.04115v3-abstract-short" style="display: inline;"> The proton-induced deuteron knockout reaction, ($p$,$pd$), is one of the interests in the studies for probing the deuteron-like $p$-$n$ correlation in nuclei. According to a recent study of the inclusive deuteron-induced reaction, $(d,d'x)$, the refraction effect of the deuteron has a significant effect on the elementary process, nucleon-deuteron ($N$-$d$) binary scattering inside a nucleus, of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04115v3-abstract-full').style.display = 'inline'; document.getElementById('2404.04115v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.04115v3-abstract-full" style="display: none;"> The proton-induced deuteron knockout reaction, ($p$,$pd$), is one of the interests in the studies for probing the deuteron-like $p$-$n$ correlation in nuclei. According to a recent study of the inclusive deuteron-induced reaction, $(d,d'x)$, the refraction effect of the deuteron has a significant effect on the elementary process, nucleon-deuteron ($N$-$d$) binary scattering inside a nucleus, of the reaction. In the paper, it is shown that proper treatment of the local $N$-$d$ relative momentum in the elementary process is crucial in $(d,d'x)$ reactions at $100$ MeV and below. In the present work, we investigate the deuteron refraction effect in the exclusive ($p$,$pd$) reactions. We also discuss the incident energy dependence of the refraction effect. The refraction effect on the $p$-$d$ elementary process is taken into account by the local semiclassical approximation to the distorted waves. The results are compared with those obtained with the asymptotic momentum approximation, which is standardly applied to the distorted wave impulse approximation framework. It is shown that the refraction effect drastically changes the energy sharing distribution of the $^{16}$O($p$,$pd$)$^{14}$N reaction at 101.3 MeV and gives a better agreement with experimental data. In contrast, it is confirmed that the effect is negligibly small at 250 MeV. We have clarified that the deuteron refraction effect is significant in the $^{16}$O($p$,$pd$)$^{14}$N reaction at 101.3 MeV and the experimental data are well reproduced. The refraction effect plays a significant role in both the shape and magnitude of the ($p$,$pd$) cross section, while the effect is negligible at 250 MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04115v3-abstract-full').style.display = 'none'; document.getElementById('2404.04115v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 110, 014617 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.13129">arXiv:2311.13129</a> <span> [<a href="https://arxiv.org/pdf/2311.13129">pdf</a>, <a href="https://arxiv.org/format/2311.13129">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.212501">10.1103/PhysRevLett.131.212501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Validation of the $^{10}\mathrm{Be}$ Ground-State Molecular Structure Using $^{10}\mathrm{Be}(p,p伪)^{6}\mathrm{He}$ Triple Differential Reaction Cross-Section Measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+P+J">P. J. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Assi%C3%A9%2C+M">M. Assi茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibelin%2C+J">J. Gibelin</a>, <a href="/search/nucl-ex?searchtype=author&query=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Harada%2C+T">T. Harada</a>, <a href="/search/nucl-ex?searchtype=author&query=Kanada-En%27yo%2C+Y">Y. Kanada-En'yo</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Y. Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Leblond%2C+S">S. Leblond</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+P+F">P. F. Liang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lokotko%2C+T">T. Lokotko</a>, <a href="/search/nucl-ex?searchtype=author&query=Lyu%2C+M">M. Lyu</a>, <a href="/search/nucl-ex?searchtype=author&query=Marqu%C3%A9s%2C+F+M">F. M. Marqu茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsuda%2C+Y">Y. Matsuda</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsu%2C+H">H. Otsu</a>, <a href="/search/nucl-ex?searchtype=author&query=Rindel%2C+E">E. Rindel</a>, <a href="/search/nucl-ex?searchtype=author&query=Stuhl%2C+L">L. Stuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+D">D. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Togano%2C+Y">Y. Togano</a>, <a href="/search/nucl-ex?searchtype=author&query=Tomai%2C+T">T. Tomai</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+X">X. X. Xu</a> , et al. (36 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.13129v1-abstract-short" style="display: inline;"> The cluster structure of the neutron-rich isotope $^{10}$Be has been probed via the $(p,p伪)$ reaction at 150 MeV/nucleon in inverse kinematics and in quasifree conditions. The populated states of $^{6}$He residues were investigated through missing mass spectroscopy. The triple differential cross-section for the ground-state transition was extracted for quasifree angle pairs ($胃_{p}$, $胃_伪$) and co… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.13129v1-abstract-full').style.display = 'inline'; document.getElementById('2311.13129v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.13129v1-abstract-full" style="display: none;"> The cluster structure of the neutron-rich isotope $^{10}$Be has been probed via the $(p,p伪)$ reaction at 150 MeV/nucleon in inverse kinematics and in quasifree conditions. The populated states of $^{6}$He residues were investigated through missing mass spectroscopy. The triple differential cross-section for the ground-state transition was extracted for quasifree angle pairs ($胃_{p}$, $胃_伪$) and compared to distorted-wave impulse approximation reaction calculations performed in a microscopic framework using successively the Tohsaki-Horiuchi-Schuck-R枚pke product wave-function and the wave-function deduced from Antisymmetrized Molecular Dynamics calculations. The remarkable agreement between calculated and measured cross-sections in both shape and magnitude validates the molecular structure description of the $^{10}$Be ground-state, configured as an $伪$-$伪$ core with two valence neutrons occupying $蟺$-type molecular orbitals. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.13129v1-abstract-full').style.display = 'none'; document.getElementById('2311.13129v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 3 figures, 1 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131 (2023) 212501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2307.07077">arXiv:2307.07077</a> <span> [<a href="https://arxiv.org/pdf/2307.07077">pdf</a>, <a href="https://arxiv.org/format/2307.07077">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2023.138025">10.1016/j.physletb.2023.138025 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Level Structures of $^{56,58}$Ca Cast Doubt on a doubly magic $^{60}$Ca </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Tsunoda%2C+Y">Y. Tsunoda</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsuka%2C+T">T. Otsuka</a>, <a href="/search/nucl-ex?searchtype=author&query=Chazono%2C+Y">Y. Chazono</a>, <a href="/search/nucl-ex?searchtype=author&query=Hagen%2C+G">G. Hagen</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Jansen%2C+G+R">G. R. Jansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Shimizu%2C+N">N. Shimizu</a>, <a href="/search/nucl-ex?searchtype=author&query=Utsuno%2C+Y">Y. Utsuno</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+N+L">N. L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J+-">J. -M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Giganon%2C+A">A. Giganon</a> , et al. (58 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2307.07077v1-abstract-short" style="display: inline;"> Gamma decays were observed in $^{56}$Ca and $^{58}$Ca following quasi-free one-proton knockout reactions from $^{57,59}$Sc beams at $\approx 200$ MeV/nucleon. For $^{56}$Ca, a $纬$ ray transition was measured to be 1456(12) keV, while for $^{58}$Ca an indication for a transition was observed at 1115(34) keV. Both transitions were tentatively assigned as the $2^+_1 \rightarrow 0^+_{gs}$ decays, and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.07077v1-abstract-full').style.display = 'inline'; document.getElementById('2307.07077v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.07077v1-abstract-full" style="display: none;"> Gamma decays were observed in $^{56}$Ca and $^{58}$Ca following quasi-free one-proton knockout reactions from $^{57,59}$Sc beams at $\approx 200$ MeV/nucleon. For $^{56}$Ca, a $纬$ ray transition was measured to be 1456(12) keV, while for $^{58}$Ca an indication for a transition was observed at 1115(34) keV. Both transitions were tentatively assigned as the $2^+_1 \rightarrow 0^+_{gs}$ decays, and were compared to results from ab initio and conventional shell-model approaches. A shell-model calculation in a wide model space with a marginally modified effective nucleon-nucleon interaction depicts excellent agreement with experiment for $2^+_1$ level energies, two-neutron separation energies, and reaction cross sections, corroborating the formation of a new nuclear shell above the $N$ = 34 shell. Its constituents, the $0f_{5/2}$ and $0g_{9/2}$ orbitals, are almost degenerate. This degeneracy precludes the possibility for a doubly magic $^{60}$Ca and potentially drives the dripline of Ca isotopes to $^{70}$Ca or even beyond. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.07077v1-abstract-full').style.display = 'none'; document.getElementById('2307.07077v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 843 (2023) 138025 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.16189">arXiv:2306.16189</a> <span> [<a href="https://arxiv.org/pdf/2306.16189">pdf</a>, <a href="https://arxiv.org/format/2306.16189">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2023.138038">10.1016/j.physletb.2023.138038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Intruder configurations in $^{29}$Ne at the transition into the island of inversion: Detailed structure study of $^{28}$Ne </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+H">H. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yasuda%2C+M">M. Yasuda</a>, <a href="/search/nucl-ex?searchtype=author&query=Kondo%2C+Y">Y. Kondo</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakamura%2C+T">T. Nakamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Tostevin%2C+J+A">J. A. Tostevin</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsuka%2C+T">T. Otsuka</a>, <a href="/search/nucl-ex?searchtype=author&query=Poves%2C+A">A. Poves</a>, <a href="/search/nucl-ex?searchtype=author&query=Shimizu%2C+N">N. Shimizu</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+N+L">N. L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Falou%2C+H+A">H. Al Falou</a>, <a href="/search/nucl-ex?searchtype=author&query=Atar%2C+L">L. Atar</a>, <a href="/search/nucl-ex?searchtype=author&query=Aumann%2C+T">T. Aumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Boretzky%2C+K">K. Boretzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Caesar%2C+C">C. Caesar</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Chae%2C+H">H. Chae</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Crawford%2C+H+L">H. L. Crawford</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Deshayes%2C+Q">Q. Deshayes</a> , et al. (71 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2306.16189v1-abstract-short" style="display: inline;"> Detailed $纬$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for the first time using the one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $^{28}$Ne and the negative-parity states are identified for the fir… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.16189v1-abstract-full').style.display = 'inline'; document.getElementById('2306.16189v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.16189v1-abstract-full" style="display: none;"> Detailed $纬$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for the first time using the one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $^{28}$Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder $p$-wave strength providing evidence of the breakdown of the $N=20$ and $N=28$ shell gaps. Only a weak, possible $f$-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large $p$-wave and small $f$-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.16189v1-abstract-full').style.display = 'none'; document.getElementById('2306.16189v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett.B 843 (2023) 138038 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.02985">arXiv:2303.02985</a> <span> [<a href="https://arxiv.org/pdf/2303.02985">pdf</a>, <a href="https://arxiv.org/format/2303.02985">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Description of inclusive $(d,d^{\prime}x)$ reaction with the semiclassical distorted wave model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Nakada%2C+H">Hibiki Nakada</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.02985v2-abstract-short" style="display: inline;"> The description of deuteron-induced inclusive reactions has been an important subject in direct nuclear reaction studies and nuclear data science. For proton-induced inclusive processes, the semiclassical distorted wave model (SCDW) is one of the most successful models based on quantum mechanics. We improve SCDW for deuteron-induced inclusive processes and clarify the importance of the proper trea… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02985v2-abstract-full').style.display = 'inline'; document.getElementById('2303.02985v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.02985v2-abstract-full" style="display: none;"> The description of deuteron-induced inclusive reactions has been an important subject in direct nuclear reaction studies and nuclear data science. For proton-induced inclusive processes, the semiclassical distorted wave model (SCDW) is one of the most successful models based on quantum mechanics. We improve SCDW for deuteron-induced inclusive processes and clarify the importance of the proper treatment of the kinematics of the deuteron inside a nucleus. The double differential cross section (DDX) of the inclusive deuteron-emission process $(d,d^{\prime}x)$ is described by one-step SCDW. The changes in the kinematics due to the distortion effect, the refraction effect, is taken into account by the local semiclassical approximation (LSCA). The calculated DDXs of $(d,d^{\prime}x)$ reasonably reproduce experimental data in the small energy-transfer region and at forward and middle angles with some exceptions. The angular distributions of $(d,d^{\prime}x)$ are improved by including the refraction effect. The proper treatment of the changes in the kinematics of the deuteron inside a nucleus is necessary in describing the ($d$,$d'x$) reaction. The effect of the changes on the DDX of $(d,d^{\prime}x)$ is significant compared to on the proton-induced inclusive process $(p,p^{\prime}x)$ because of the stronger distortion effect on the deuteron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02985v2-abstract-full').style.display = 'none'; document.getElementById('2303.02985v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.03836">arXiv:2301.03836</a> <span> [<a href="https://arxiv.org/pdf/2301.03836">pdf</a>, <a href="https://arxiv.org/format/2301.03836">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.130.172501">10.1103/PhysRevLett.130.172501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiple Mechanisms in Proton-Induced Nucleon Removal at $\sim$100 MeV/Nucleon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Pohl%2C+T">T. Pohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+Y+L">Y. L. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Gomez-Ramos%2C+M">M. Gomez-Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Cai%2C+B+S">B. S. Cai</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+C+X">C. X. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+B+A">B. A. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+J">J. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibelin%2C+J">J. Gibelin</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Hahn%2C+K+I">K. I. Hahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Isobe%2C+T">T. Isobe</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+D">D. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=Kondo%2C+Y">Y. Kondo</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Y. Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+P">P. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+P">P. Liang</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+H+N">H. N. Liu</a> , et al. (26 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.03836v2-abstract-short" style="display: inline;"> We report on the first proton-induced single proton- and neutron-removal reactions from the neutron-deficient $^{14}$O nucleus with large Fermi-surface asymmetry $S_n-S_p$ = 18.6 MeV at $\sim$100 MeV/nucleon, a widely used energy regime for rare-isotope studies. The measured inclusive cross sections and parallel momentum distributions of the $^{13}$N and $^{13}$O residues are compared to the state… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.03836v2-abstract-full').style.display = 'inline'; document.getElementById('2301.03836v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.03836v2-abstract-full" style="display: none;"> We report on the first proton-induced single proton- and neutron-removal reactions from the neutron-deficient $^{14}$O nucleus with large Fermi-surface asymmetry $S_n-S_p$ = 18.6 MeV at $\sim$100 MeV/nucleon, a widely used energy regime for rare-isotope studies. The measured inclusive cross sections and parallel momentum distributions of the $^{13}$N and $^{13}$O residues are compared to the state-of-the-art reaction models, with nuclear structure inputs from many-body shell-model calculations. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively. These multiple reaction mechanisms should be considered in analyses of inclusive one-nucleon removal cross sections measured at intermediate energies for quantitative investigation of single-particle strengths and correlations in atomic nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.03836v2-abstract-full').style.display = 'none'; document.getElementById('2301.03836v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 130, 172501 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.03050">arXiv:2202.03050</a> <span> [<a href="https://arxiv.org/pdf/2202.03050">pdf</a>, <a href="https://arxiv.org/format/2202.03050">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2022.136953">10.1016/j.physletb.2022.136953 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A First Glimpse at the Shell Structure beyond $^{54}$Ca: Spectroscopy of $^{55}$K, $^{55}$Ca, and $^{57}$Ca </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Koiwai%2C+T">T. Koiwai</a>, <a href="/search/nucl-ex?searchtype=author&query=Wimmer%2C+K">K. Wimmer</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbieri%2C+C">C. Barbieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Duguet%2C+T">T. Duguet</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Miyagi%2C+T">T. Miyagi</a>, <a href="/search/nucl-ex?searchtype=author&query=Navr%C3%A1til%2C+P">P. Navr谩til</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Shimizu%2C+N">N. Shimizu</a>, <a href="/search/nucl-ex?searchtype=author&query=Som%C3%A0%2C+V">V. Som脿</a>, <a href="/search/nucl-ex?searchtype=author&query=Utsuno%2C+Y">Y. Utsuno</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+N+L">N. L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=f%2C+D+C">D. Calvet f</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J+-">J. -M. Gheller</a> , et al. (58 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2202.03050v1-abstract-short" style="display: inline;"> States in the $N=35$ and 37 isotopes $^{55,57}$Ca have been populated by direct proton-induced nucleon removal reactions from $^{56,58}$Sc and $^{56}$Ca beams at the RIBF. In addition, the $(p,2p)$ quasi-free single-proton removal reaction from $^{56}$Ca was studied. Excited states in $^{55}$K, $^{55}$Ca, and $^{57}$Ca were established for the first time via in-beam $纬$-ray spectroscopy. Results f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03050v1-abstract-full').style.display = 'inline'; document.getElementById('2202.03050v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.03050v1-abstract-full" style="display: none;"> States in the $N=35$ and 37 isotopes $^{55,57}$Ca have been populated by direct proton-induced nucleon removal reactions from $^{56,58}$Sc and $^{56}$Ca beams at the RIBF. In addition, the $(p,2p)$ quasi-free single-proton removal reaction from $^{56}$Ca was studied. Excited states in $^{55}$K, $^{55}$Ca, and $^{57}$Ca were established for the first time via in-beam $纬$-ray spectroscopy. Results for the proton and neutron removal reactions from $^{56}$Ca to states in $^{55}$K and $^{55}$Ca for the level energies, excited state lifetimes, and exclusive cross sections agree well with state-of-the-art theoretical calculations using different approaches. The observation of a short-lived state in $^{57}$Ca suggests a transition in the calcium isotopic chain from single-particle dominated states at $N=35$ to collective excitations at $N=37$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03050v1-abstract-full').style.display = 'none'; document.getElementById('2202.03050v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">accepted Phys. Lett. B</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.00225">arXiv:2202.00225</a> <span> [<a href="https://arxiv.org/pdf/2202.00225">pdf</a>, <a href="https://arxiv.org/format/2202.00225">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.054603">10.1103/PhysRevC.107.054603 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Effective polarization in proton-induced $伪$ knockout reactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Edagawa%2C+T">Tomoatsu Edagawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Chazono%2C+Y">Yoshiki Chazono</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2202.00225v3-abstract-short" style="display: inline;"> The effective polarization of the residual nucleus in the proton-induced $伪$ knockout reaction is investigated within the distorted wave impulse approximation framework. The strong absorption of the emitted $伪$ particle results in strong selectivity on the reaction "position" depending on the third component of the single-particle orbital angular momentum of the $伪$ particle inside a nucleus, henc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.00225v3-abstract-full').style.display = 'inline'; document.getElementById('2202.00225v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.00225v3-abstract-full" style="display: none;"> The effective polarization of the residual nucleus in the proton-induced $伪$ knockout reaction is investigated within the distorted wave impulse approximation framework. The strong absorption of the emitted $伪$ particle results in strong selectivity on the reaction "position" depending on the third component of the single-particle orbital angular momentum of the $伪$ particle inside a nucleus, hence on the spin direction of the reaction residue. This is caused by a mechanism that is similar to the Maris effect, the effective polarization in the proton-induced proton knockout reactions. However, as a distinct feature of the effective polarization in the $伪$ knockout process, the spin degrees of freedom of the reacting particles play no role. The $伪$ knockout process with complete kinematics can be a useful polarization technique for the residual nucleus, without actively controlling the spin of the proton. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.00225v3-abstract-full').style.display = 'none'; document.getElementById('2202.00225v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 6 Figures, published in Physical Review C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 129 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.09512">arXiv:2201.09512</a> <span> [<a href="https://arxiv.org/pdf/2201.09512">pdf</a>, <a href="https://arxiv.org/format/2201.09512">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.ppnp.2022.103951">10.1016/j.ppnp.2022.103951 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Hagino%2C+K">K. Hagino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Moro%2C+A+M">A. M. Moro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2201.09512v2-abstract-short" style="display: inline;"> Atomic nuclei are composite systems, and they may be dynamically excited during nuclear reactions. Such excitations are not only relevant to inelastic scattering but they also affect other reaction processes such as elastic scattering and fusion. The coupled-channels approach is a framework which can describe these reaction processes in a unified manner. It expands the total wave function of the s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.09512v2-abstract-full').style.display = 'inline'; document.getElementById('2201.09512v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.09512v2-abstract-full" style="display: none;"> Atomic nuclei are composite systems, and they may be dynamically excited during nuclear reactions. Such excitations are not only relevant to inelastic scattering but they also affect other reaction processes such as elastic scattering and fusion. The coupled-channels approach is a framework which can describe these reaction processes in a unified manner. It expands the total wave function of the system in terms of the ground and excited states of the colliding nuclei, and solves the coupled Shr枚dinger equations to obtain the $S$-matrix, from which several cross sections can be constructed. This approach has been a standard tool to analyze experimental data for nuclear reactions. In this paper, we review the present status and the recent developments of the coupled-channels approach. This includes the microscopic coupled-channels method and its application to cluster physics, the continuum discretized coupled-channels (CDCC) method for breakup reactions, the semi-microscopic approach to heavy-ion subbarrier fusion reactions, the channel coupling effects on nuclear astrophysics and syntheses of superheavy elements, and inclusive breakup and incomplete fusion reactions of weakly-bound nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.09512v2-abstract-full').style.display = 'none'; document.getElementById('2201.09512v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">90 pages, 37 figures. Accepted for publication in Progress in Particle and Nuclear Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KUNS-2918, NITEP 128 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.03284">arXiv:2110.03284</a> <span> [<a href="https://arxiv.org/pdf/2110.03284">pdf</a>, <a href="https://arxiv.org/format/2110.03284">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.104.044331">10.1103/PhysRevC.104.044331 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Investigation of the ground-state spin inversion in the neutron-rich 47,49Cl isotopes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Linh%2C+B+D">B. D. Linh</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbieri%2C+C">C. Barbieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chung%2C+L+X">L. X. Chung</a>, <a href="/search/nucl-ex?searchtype=author&query=Duguet%2C+T">T. Duguet</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Ramos%2C+M">M. G贸mez-Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Moro%2C+A">A. Moro</a>, <a href="/search/nucl-ex?searchtype=author&query=Navr%C3%A1til%2C+P">P. Navr谩til</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Phuc%2C+N+T+T">N. T. T. Phuc</a>, <a href="/search/nucl-ex?searchtype=author&query=Shimizu%2C+N">N. Shimizu</a>, <a href="/search/nucl-ex?searchtype=author&query=Som%C3%A0%2C+V">V. Som脿</a>, <a href="/search/nucl-ex?searchtype=author&query=Utsuno%2C+Y">Y. Utsuno</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+N+L">N. L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a> , et al. (61 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.03284v1-abstract-short" style="display: inline;"> A first gamma-ray study of 47,49Cl spectroscopy was performed at the Radioactive Isotope Beam Factory with 50Ar projectiles at 217 MeV/nucleon, impinging on the liquid hydrogen target of the MINOS device. Prompt de-excitation gamma-rays were measured with the NaI(Tl) array DALI2+. Through the one-proton knockout reaction 50Ar(p,2p), a spin assignment could be determined for the low-lying states of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.03284v1-abstract-full').style.display = 'inline'; document.getElementById('2110.03284v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.03284v1-abstract-full" style="display: none;"> A first gamma-ray study of 47,49Cl spectroscopy was performed at the Radioactive Isotope Beam Factory with 50Ar projectiles at 217 MeV/nucleon, impinging on the liquid hydrogen target of the MINOS device. Prompt de-excitation gamma-rays were measured with the NaI(Tl) array DALI2+. Through the one-proton knockout reaction 50Ar(p,2p), a spin assignment could be determined for the low-lying states of 49Cl from the momentum distribution obtained with the SAMURAI spectrometer. A spin-parity J = 3/2+ is deduced for the ground state of 49Cl, similar to the recently studied N = 32 isotope 51K. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.03284v1-abstract-full').style.display = 'none'; document.getElementById('2110.03284v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.02211">arXiv:2109.02211</a> <span> [<a href="https://arxiv.org/pdf/2109.02211">pdf</a>, <a href="https://arxiv.org/ps/2109.02211">ps</a>, <a href="https://arxiv.org/format/2109.02211">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.105.014622">10.1103/PhysRevC.105.014622 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First application of dispersive optical model to ($p$,$2p$) analysis within distorted wave impulse approximation framework </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Atkinson%2C+M+C">M. C. Atkinson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Dickhoff%2C+W+H">W. H. Dickhoff</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2109.02211v2-abstract-short" style="display: inline;"> Both ($e$,$e'p$) and ($p$,$2p$) reactions have been performed to study the proton single-particle character of nuclear states with its related spectroscopic factor. Recently, the dispersive optical model (DOM) was applied to the ($e$,$e'p$) analysis revealing that the traditional treatment of the single-particle overlap function, distorted waves, and nonlocality must be further improved to achieve… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.02211v2-abstract-full').style.display = 'inline'; document.getElementById('2109.02211v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.02211v2-abstract-full" style="display: none;"> Both ($e$,$e'p$) and ($p$,$2p$) reactions have been performed to study the proton single-particle character of nuclear states with its related spectroscopic factor. Recently, the dispersive optical model (DOM) was applied to the ($e$,$e'p$) analysis revealing that the traditional treatment of the single-particle overlap function, distorted waves, and nonlocality must be further improved to achieve quantitative nuclear spectroscopy. We apply the DOM wave functions to the traditional ($p$,$2p$) analysis and investigate the consistency of the DOM spectroscopic factor that describes the ($e$,$e'p$) cross section with the result of the ($p$,$2p$) analysis. Additionally, we make a comparison with a phenomenological single-particle wave function and optical potential. Uncertainty arising from a choice of $p$-$p$ interaction is also investigated. We implement the DOM wave functions to the distorted wave impulse approximation (DWIA) framework for ($p$,$2p$) reactions. DOM + DWIA analysis on $^{40}$Ca($p$,$2p$)$^{39}$K data generates a proton $0d_{3/2}$ spectroscopic factor of 0.560, which is meaningfully smaller than the DOM value of 0.71 shown to be consistent with the ($e$,$e'p$) analysis. Uncertainties arising from choices of single-particle wave function, optical potential, and $p$-$p$ interaction do not explain this inconsistency. The inconsistency in the spectroscopic factor suggests there is urgent need for improving the description of $p$-$p$ scattering in a nucleus and the resulting in-medium interaction with corresponding implications for the analysis of this reaction in inverse kinematics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.02211v2-abstract-full').style.display = 'none'; document.getElementById('2109.02211v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 105, 014622 January (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.12749">arXiv:2108.12749</a> <span> [<a href="https://arxiv.org/pdf/2108.12749">pdf</a>, <a href="https://arxiv.org/ps/2108.12749">ps</a>, <a href="https://arxiv.org/format/2108.12749">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Ambiguities from nuclear interactions in the $^{12}$C($p,2p$)$^{11}$B reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Phuc%2C+N+T+T">Nguyen Tri Toan Phuc</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Phuc%2C+N+H">Nguyen Hoang Phuc</a>, <a href="/search/nucl-ex?searchtype=author&query=Linh%2C+B+D">Bui Duy Linh</a>, <a href="/search/nucl-ex?searchtype=author&query=Hai%2C+V+H">Vo Hong Hai</a>, <a href="/search/nucl-ex?searchtype=author&query=Chung%2C+L+X">Le Xuan Chung</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.12749v2-abstract-short" style="display: inline;"> We investigate the impact of ambiguities coming from the choice of optical potentials and nucleon-nucleon scattering cross sections on the spectroscopic factors extracted from the $^{12}$C($p,2p$)$^{11}$B reaction. These ambiguities are evaluated by analyzing the cross sections of the $^{12}$C($p,2p$)$^{11}$B reaction at 100 and 200 MeV within the framework of the distorted-wave impulse approximat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.12749v2-abstract-full').style.display = 'inline'; document.getElementById('2108.12749v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.12749v2-abstract-full" style="display: none;"> We investigate the impact of ambiguities coming from the choice of optical potentials and nucleon-nucleon scattering cross sections on the spectroscopic factors extracted from the $^{12}$C($p,2p$)$^{11}$B reaction. These ambiguities are evaluated by analyzing the cross sections of the $^{12}$C($p,2p$)$^{11}$B reaction at 100 and 200 MeV within the framework of the distorted-wave impulse approximation with realistic choices of nuclear inputs. The results show that the studied ambiguities are considerably large in this energy region and careful choices of nuclear inputs used in the reaction calculations are required to extract reliable structure information. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.12749v2-abstract-full').style.display = 'none'; document.getElementById('2108.12749v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted version by Communications in Physics. 16 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 118 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09511">arXiv:2103.09511</a> <span> [<a href="https://arxiv.org/pdf/2103.09511">pdf</a>, <a href="https://arxiv.org/format/2103.09511">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.104.034612">10.1103/PhysRevC.104.034612 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Three-body description of $^9$C: Role of low-lying resonances in breakup reactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Singh%2C+J">Jagjit Singh</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsumoto%2C+T">Takuma Matsumoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">Tokuro Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09511v2-abstract-short" style="display: inline;"> The $^9$C nucleus and related capture reaction, ${^8\mathrm{B}}(p,纬){^9\mathrm{C}}$, have been intensively studied with an astrophysical interest. Due to the weakly-bound nature of $^9$C, its structure is likely to be described as the three-body (${^7\mathrm{Be}}+p+p$). Its continuum structure is also important to describe reaction processes of $^9$C, with which the reaction rate of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09511v2-abstract-full').style.display = 'inline'; document.getElementById('2103.09511v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09511v2-abstract-full" style="display: none;"> The $^9$C nucleus and related capture reaction, ${^8\mathrm{B}}(p,纬){^9\mathrm{C}}$, have been intensively studied with an astrophysical interest. Due to the weakly-bound nature of $^9$C, its structure is likely to be described as the three-body (${^7\mathrm{Be}}+p+p$). Its continuum structure is also important to describe reaction processes of $^9$C, with which the reaction rate of the ${^8\mathrm{B}}(p,纬){^9\mathrm{C}}$ process have been extracted indirectly. We perform three-body calculations on $^9$C and discuss properties of its ground and low-lying states via breakup reactions. We employ the three-body model of $^9$C using the Gaussian-expansion method combined with the complex-scaling method. This model is implemented in the four-body version of the continuum-discretized coupled-channels method, by which breakup reactions of $^9$C are studied. The intrinsic spin of $^7$Be is disregarded. By tuning a three-body interaction in the Hamiltonian of $^9$C, we obtain the low-lying $2^+$ state with the resonant energy 0.781 MeV and the decay width 0.137 MeV, which is consistent with the available experimental information and a relatively high-lying second $2^+$ wider resonant state. Our calculation predicts also sole $0^+$ and three $1^-$ resonant states. We discuss the role of these resonances in the elastic breakup cross section of $^9$C on $^{208}$Pb at 65 and 160 MeV/A. The low-lying 2$^+$ state is probed as a sharp peak of the breakup cross section, while the 1$^-$ states enhance the cross section around 3 MeV. Our calculations will further support the future and ongoing experimental campaigns for extracting astrophysical information and evaluating the two-proton removal cross-sections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09511v2-abstract-full').style.display = 'none'; document.getElementById('2103.09511v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures, 2 tables (final published version)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 93 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 104, 034612 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2102.03699">arXiv:2102.03699</a> <span> [<a href="https://arxiv.org/pdf/2102.03699">pdf</a>, <a href="https://arxiv.org/format/2102.03699">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.082501">10.1103/PhysRevLett.126.082501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quasi-free Neutron Knockout Reaction Reveals a Small $s$-orbital Component in the Borromean Nucleus $^{17}$B </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Z+H">Z. H. Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Y. Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+X+-">X. -X. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+J+G">J. G. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Kimura%2C+M">M. Kimura</a>, <a href="/search/nucl-ex?searchtype=author&query=Michel%2C+N">N. Michel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+C+X">C. X. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+Q">Q. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Authelet%2C+G">G. Authelet</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Caesar%2C+C">C. Caesar</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Dozono%2C+M">M. Dozono</a>, <a href="/search/nucl-ex?searchtype=author&query=Feng%2C+J">J. Feng</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J+-">J. -M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibelin%2C+J">J. Gibelin</a>, <a href="/search/nucl-ex?searchtype=author&query=Giganon%2C+A">A. Giganon</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Hasegawa%2C+K">K. Hasegawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Isobe%2C+T">T. Isobe</a> , et al. (51 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2102.03699v1-abstract-short" style="display: inline;"> A kinematically complete quasi-free $(p,pn)$ experiment in inverse kinematics was performed to study the structure of the Borromean nucleus $^{17}$B, which had long been considered to have neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for $1s_{1/2}$ and $0d_{5/2}$ orbitals, and a surprisingly small percentage of 9(2)$\%$ w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.03699v1-abstract-full').style.display = 'inline'; document.getElementById('2102.03699v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2102.03699v1-abstract-full" style="display: none;"> A kinematically complete quasi-free $(p,pn)$ experiment in inverse kinematics was performed to study the structure of the Borromean nucleus $^{17}$B, which had long been considered to have neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for $1s_{1/2}$ and $0d_{5/2}$ orbitals, and a surprisingly small percentage of 9(2)$\%$ was determined for $1s_{1/2}$. Our finding of such a small $1s_{1/2}$ component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in $^{17}$B. The present work gives the smallest $s$- or $p$-orbital component among known nuclei exhibiting halo features, and implies that the dominant occupation of $s$ or $p$ orbitals is not a prerequisite for the occurrence of neutron halo. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.03699v1-abstract-full').style.display = 'none'; document.getElementById('2102.03699v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in Physical Review Letters,8 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.04820">arXiv:2101.04820</a> <span> [<a href="https://arxiv.org/pdf/2101.04820">pdf</a>, <a href="https://arxiv.org/ps/2101.04820">ps</a>, <a href="https://arxiv.org/format/2101.04820">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.103.L031305">10.1103/PhysRevC.103.L031305 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Unexpectedly enhanced $伪$-particle preformation in $^{48}$Ti probed by the $(p,p伪)$ reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Taniguchi%2C+Y">Yasutaka Taniguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiba%2C+Y">Yohei Chiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Kanada-En%27yo%2C+Y">Yoshiko Kanada-En'yo</a>, <a href="/search/nucl-ex?searchtype=author&query=Kimura%2C+M">Masaaki Kimura</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2101.04820v1-abstract-short" style="display: inline;"> The formation of $伪$ particle on nuclear surface has been a fundamental problem since the early age of nuclear physics. It strongly affects the $伪$ decay lifetime of heavy and superheavy elements, level scheme of light nuclei, and the synthesis of the elements in stars. However, the $伪$-particle formation in medium-mass nuclei has been poorly known despite its importance. Here, based on the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.04820v1-abstract-full').style.display = 'inline'; document.getElementById('2101.04820v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.04820v1-abstract-full" style="display: none;"> The formation of $伪$ particle on nuclear surface has been a fundamental problem since the early age of nuclear physics. It strongly affects the $伪$ decay lifetime of heavy and superheavy elements, level scheme of light nuclei, and the synthesis of the elements in stars. However, the $伪$-particle formation in medium-mass nuclei has been poorly known despite its importance. Here, based on the $^{48}{\rm Ti}(p,p伪)^{44}{\rm Ca}$ reaction analysis, we report that the $伪$-particle formation in a medium-mass nucleus $^{48}{\rm Ti}$ is much stronger than that expected from a mean-field approximation, and the estimated average distance between $伪$ particle and the residue is as large as 4.5 fm. This new result poses a challenge of describing four nucleon correlations by microscopic nuclear models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.04820v1-abstract-full').style.display = 'none'; document.getElementById('2101.04820v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 88 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 103, 031305 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.12553">arXiv:2012.12553</a> <span> [<a href="https://arxiv.org/pdf/2012.12553">pdf</a>, <a href="https://arxiv.org/format/2012.12553">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.ppnp.2021.103847">10.1016/j.ppnp.2021.103847 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quenching of single-particle strength from direct reactions with stable and rare-isotope beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aumann%2C+T">T. Aumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbieri%2C+C">C. Barbieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertulani%2C+C+A">C. A. Bertulani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonaccorso%2C+A">A. Bonaccorso</a>, <a href="/search/nucl-ex?searchtype=author&query=Dickhoff%2C+W+H">W. H. Dickhoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Gade%2C+A">A. Gade</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Ramos%2C+M">M. G贸mez-Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Kay%2C+B+P">B. P. Kay</a>, <a href="/search/nucl-ex?searchtype=author&query=Moro%2C+A+M">A. M. Moro</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakamura%2C+T">T. Nakamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Paschalis%2C+S">S. Paschalis</a>, <a href="/search/nucl-ex?searchtype=author&query=Uesaka%2C+T">T. Uesaka</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2012.12553v1-abstract-short" style="display: inline;"> In this review article we discuss the present status of direct nuclear reactions and the nuclear structure aspects one can study with them. We discuss the spectroscopic information we can assess in experiments involving transfer reactions, heavy-ion-induced knockout reactions and quasifree scattering with (p,2p), (p,pn), and (e,e'p) reactions. In particular, we focus on the proton-to-neutron asymm… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.12553v1-abstract-full').style.display = 'inline'; document.getElementById('2012.12553v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.12553v1-abstract-full" style="display: none;"> In this review article we discuss the present status of direct nuclear reactions and the nuclear structure aspects one can study with them. We discuss the spectroscopic information we can assess in experiments involving transfer reactions, heavy-ion-induced knockout reactions and quasifree scattering with (p,2p), (p,pn), and (e,e'p) reactions. In particular, we focus on the proton-to-neutron asymmetry of the quenching of the spectroscopic strength. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.12553v1-abstract-full').style.display = 'none'; document.getElementById('2012.12553v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">138 pages, 63 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog. Part. Nucl. Phys. (2021) 103847 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.10786">arXiv:2011.10786</a> <span> [<a href="https://arxiv.org/pdf/2011.10786">pdf</a>, <a href="https://arxiv.org/ps/2011.10786">ps</a>, <a href="https://arxiv.org/format/2011.10786">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.102.064320">10.1103/PhysRevC.102.064320 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $\boldsymbol{N=32}$ shell closure below calcium: Low-lying structure of $^{50}$Ar </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Rodriguez%2C+W">W. Rodriguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Men%C3%A9ndez%2C+J">J. Men茅ndez</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Schwenk%2C+A">A. Schwenk</a>, <a href="/search/nucl-ex?searchtype=author&query=Shimizu%2C+N">N. Shimizu</a>, <a href="/search/nucl-ex?searchtype=author&query=Simonis%2C+J">J. Simonis</a>, <a href="/search/nucl-ex?searchtype=author&query=Utsuno%2C+Y">Y. Utsuno</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+L">L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J">J-M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Giganon%2C+A">A. Giganon</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Hilaire%2C+C">C. Hilaire</a> , et al. (56 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.10786v1-abstract-short" style="display: inline;"> Low-lying excited states in the $N=32$ isotope $^{50}$Ar were investigated by in-beam $纬$-ray spectroscopy following proton- and neutron-knockout, multi-nucleon removal, and proton inelastic scattering at the RIKEN Radioactive Isotope Beam Factory. The energies of the two previously reported transitions have been confirmed, and five additional states are presented for the first time, including a c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.10786v1-abstract-full').style.display = 'inline'; document.getElementById('2011.10786v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.10786v1-abstract-full" style="display: none;"> Low-lying excited states in the $N=32$ isotope $^{50}$Ar were investigated by in-beam $纬$-ray spectroscopy following proton- and neutron-knockout, multi-nucleon removal, and proton inelastic scattering at the RIKEN Radioactive Isotope Beam Factory. The energies of the two previously reported transitions have been confirmed, and five additional states are presented for the first time, including a candidate for a 3$^-$ state. The level scheme built using $纬纬$ coincidences was compared to shell-model calculations in the $sd-pf$ model space, and to ab initio predictions based on chiral two- and three-nucleon interactions. Theoretical proton- and neutron-knockout cross sections suggest that two of the new transitions correspond to $2^+$ states, while the previously proposed $4^+$ state could also correspond to a $2^+$ state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.10786v1-abstract-full').style.display = 'none'; document.getElementById('2011.10786v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for Phys. Rev. C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 064320 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.04802">arXiv:2010.04802</a> <span> [<a href="https://arxiv.org/pdf/2010.04802">pdf</a>, <a href="https://arxiv.org/format/2010.04802">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.125.252501">10.1103/PhysRevLett.125.252501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Surface localization of the dineutron in $^{11}$Li </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Y. Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Authelet%2C+G">G. Authelet</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Caesar%2C+C">C. Caesar</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Dozono%2C+M">M. Dozono</a>, <a href="/search/nucl-ex?searchtype=author&query=Feng%2C+J">J. Feng</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J+-">J. -M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibelin%2C+J">J. Gibelin</a>, <a href="/search/nucl-ex?searchtype=author&query=Giganon%2C+A">A. Giganon</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Hasegawa%2C+K">K. Hasegawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Isobe%2C+T">T. Isobe</a>, <a href="/search/nucl-ex?searchtype=author&query=Kanaya%2C+Y">Y. Kanaya</a>, <a href="/search/nucl-ex?searchtype=author&query=Kawakami%2C+S">S. Kawakami</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+D">D. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=Kikuchi%2C+Y">Y. Kikuchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiyokawa%2C+Y">Y. Kiyokawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+M">M. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+N">N. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+T">T. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kondo%2C+Y">Y. Kondo</a> , et al. (42 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.04802v1-abstract-short" style="display: inline;"> The formation of a dineutron in the nucleus $^{11}$Li is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in $^{11}$Li via the $(p,pn)$ knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calcu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.04802v1-abstract-full').style.display = 'inline'; document.getElementById('2010.04802v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.04802v1-abstract-full" style="display: none;"> The formation of a dineutron in the nucleus $^{11}$Li is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in $^{11}$Li via the $(p,pn)$ knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at $r\sim3.6$ fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.04802v1-abstract-full').style.display = 'none'; document.getElementById('2010.04802v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 4 figures. Accepted for Physical Review Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 125 (2020) 252501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.05605">arXiv:2005.05605</a> <span> [<a href="https://arxiv.org/pdf/2005.05605">pdf</a>, <a href="https://arxiv.org/format/2005.05605">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptab055">10.1093/ptep/ptab055 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Systematic study on the role of various higher-order processes in the breakup of weakly-bound projectiles </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Singh%2C+J">Jagjit Singh</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsumoto%2C+T">Takuma Matsumoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.05605v2-abstract-short" style="display: inline;"> The virtual photon theory (VPT), which is based on first-order Coulomb dissociation restricted to the electric dipole ($E1$), has been successfully used to explain the breakup data for several cases. Our aim is to study the role of various higher-order processes that are ignored in the VPT, such as the nuclear breakup, interference between nuclear and Coulomb amplitudes, and multistep breakup proc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05605v2-abstract-full').style.display = 'inline'; document.getElementById('2005.05605v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.05605v2-abstract-full" style="display: none;"> The virtual photon theory (VPT), which is based on first-order Coulomb dissociation restricted to the electric dipole ($E1$), has been successfully used to explain the breakup data for several cases. Our aim is to study the role of various higher-order processes that are ignored in the VPT, such as the nuclear breakup, interference between nuclear and Coulomb amplitudes, and multistep breakup processes mainly due to strong continuum-continuum couplings in the breakup of two-body projectiles on a heavy target at both intermediate and higher incident energies. For the purpose of numerical calculations, we employed eikonal version of three-body continuum-discretized coupled-channels (CDCC) reaction model. Our results for the breakup of $^{11}$Be and $^{17}$F on $^{208}$Pb target at 100, 250, and 520 MeV/A, show the importance of nuclear breakup contribution, and its significant role in the multistep processes. The multistep effect on Coulomb breakup for core-neutron projectile was found to be negligible, whereas it was important for core-proton projectile. Coulomb-nuclear interference (CNI) effect was also found to be non-negligible. Quantitatively, the multistep effects due to the nuclear breakup was found to depend on the incident energy through the energy dependence of the core-target and nucleon-target nuclear potentials. The nuclear breakup component, the CNI effect, and the multistep breakup processes are all found to be non-negligible; hence, the assumptions adopted in the VPT for the accurate description of breakup cross sections are not valid. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05605v2-abstract-full').style.display = 'none'; document.getElementById('2005.05605v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 10 figures, 4 tables, accepted version for publication in Progress of Theoretical and Experimental Physics (PTEP). Please refer to the last section "Corrections/Changes w.r.t previous version"</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 71 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog. Theor. Exp. Phys. 2021, 073D01 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.07887">arXiv:1912.07887</a> <span> [<a href="https://arxiv.org/pdf/1912.07887">pdf</a>, <a href="https://arxiv.org/ps/1912.07887">ps</a>, <a href="https://arxiv.org/format/1912.07887">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2019.135071">10.1016/j.physletb.2019.135071 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Shell evolution of $N=40$ isotones towards $^{60}$Ca: First spectroscopy of $^{62}$Ti </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cort%C3%A9s%2C+M+L">M. L. Cort茅s</a>, <a href="/search/nucl-ex?searchtype=author&query=Rodriguez%2C+W">W. Rodriguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Lenzi%2C+S+M">S. M. Lenzi</a>, <a href="/search/nucl-ex?searchtype=author&query=Men%C3%A9ndez%2C+J">J. Men茅ndez</a>, <a href="/search/nucl-ex?searchtype=author&query=Nowacki%2C+F">F. Nowacki</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Poves%2C+A">A. Poves</a>, <a href="/search/nucl-ex?searchtype=author&query=Rodr%C3%ADguez%2C+T+R">T. R. Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Schwenk%2C+A">A. Schwenk</a>, <a href="/search/nucl-ex?searchtype=author&query=Simonis%2C+J">J. Simonis</a>, <a href="/search/nucl-ex?searchtype=author&query=Stroberg%2C+S+R">S. R. Stroberg</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">K. Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+L">L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Browne%2C+F">F. Browne</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiga%2C+N">N. Chiga</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J">J-M. Gheller</a> , et al. (59 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.07887v1-abstract-short" style="display: inline;"> Excited states in the $N=40$ isotone $^{62}$Ti were populated via the $^{63}$V$(p,2p)$$^{62}$Ti reaction at $\sim$200~MeV/u at the Radioactive Isotope Beam Factory and studied using $纬$-ray spectroscopy. The energies of the $2^+_1 \rightarrow 0^{+}_{\mathrm{gs}}$ and $4^+_1 \rightarrow 2^+_1$ transitions, observed here for the first time, indicate a deformed $^{62}$Ti ground state. These energies… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.07887v1-abstract-full').style.display = 'inline'; document.getElementById('1912.07887v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.07887v1-abstract-full" style="display: none;"> Excited states in the $N=40$ isotone $^{62}$Ti were populated via the $^{63}$V$(p,2p)$$^{62}$Ti reaction at $\sim$200~MeV/u at the Radioactive Isotope Beam Factory and studied using $纬$-ray spectroscopy. The energies of the $2^+_1 \rightarrow 0^{+}_{\mathrm{gs}}$ and $4^+_1 \rightarrow 2^+_1$ transitions, observed here for the first time, indicate a deformed $^{62}$Ti ground state. These energies are increased compared to the neighboring $^{64}$Cr and $^{66}$Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for $^{62}$Ti show a dominant configuration with four neutrons excited across the $N=40$ gap. Likewise, they indicate that the $N=40$ island of inversion extends down to $Z=20$, disfavoring a possible doubly magic character of the elusive $^{60}$Ca. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.07887v1-abstract-full').style.display = 'none'; document.getElementById('1912.07887v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B, 800, 135071 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.05978">arXiv:1912.05978</a> <span> [<a href="https://arxiv.org/pdf/1912.05978">pdf</a>, <a href="https://arxiv.org/format/1912.05978">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41586-019-1155-x">10.1038/s41586-019-1155-x <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $^{78}$Ni revealed as a doubly magic stronghold against nuclear deformation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Taniuchi%2C+R">R. Taniuchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Santamaria%2C+C">C. Santamaria</a>, <a href="/search/nucl-ex?searchtype=author&query=Doornenbal%2C+P">P. Doornenbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Obertelli%2C+A">A. Obertelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoneda%2C+K">K. Yoneda</a>, <a href="/search/nucl-ex?searchtype=author&query=Authelet%2C+G">G. Authelet</a>, <a href="/search/nucl-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvet%2C+D">D. Calvet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A2teau%2C+F">F. Ch芒teau</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Delbart%2C+A">A. Delbart</a>, <a href="/search/nucl-ex?searchtype=author&query=Gheller%2C+J+-">J. -M. Gheller</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillibert%2C+A">A. Gillibert</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Isobe%2C+T">T. Isobe</a>, <a href="/search/nucl-ex?searchtype=author&query=Lapoux%2C+V">V. Lapoux</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsushita%2C+M">M. Matsushita</a>, <a href="/search/nucl-ex?searchtype=author&query=Men%C3%A9ndez%2C+J">J. Men茅ndez</a>, <a href="/search/nucl-ex?searchtype=author&query=Momiyama%2C+S">S. Momiyama</a>, <a href="/search/nucl-ex?searchtype=author&query=Motobayashi%2C+T">T. Motobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Niikura%2C+M">M. Niikura</a>, <a href="/search/nucl-ex?searchtype=author&query=Nowacki%2C+F">F. Nowacki</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsu%2C+H">H. Otsu</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsuka%2C+T">T. Otsuka</a> , et al. (46 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.05978v1-abstract-short" style="display: inline;"> Nuclear magic numbers, which emerge from the strong nuclear force based on quantum chromodynamics, correspond to fully occupied energy shells of protons, or neutrons inside atomic nuclei. Doubly magic nuclei, with magic numbers for both protons and neutrons, are spherical and extremely rare across the nuclear landscape. While the sequence of magic numbers is well established for stable nuclei, evi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05978v1-abstract-full').style.display = 'inline'; document.getElementById('1912.05978v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.05978v1-abstract-full" style="display: none;"> Nuclear magic numbers, which emerge from the strong nuclear force based on quantum chromodynamics, correspond to fully occupied energy shells of protons, or neutrons inside atomic nuclei. Doubly magic nuclei, with magic numbers for both protons and neutrons, are spherical and extremely rare across the nuclear landscape. While the sequence of magic numbers is well established for stable nuclei, evidence reveals modifications for nuclei with a large proton-to-neutron asymmetry. Here, we provide the first spectroscopic study of the doubly magic nucleus $^{78}$Ni, fourteen neutrons beyond the last stable nickel isotope. We provide direct evidence for its doubly magic nature, which is also predicted by ab initio calculations based on chiral effective field theory interactions and the quasi-particle random-phase approximation. However, our results also provide the first indication of the breakdown of the neutron magic number 50 and proton magic number 28 beyond this stronghold, caused by a competing deformed structure. State-of-the-art phenomenological shell-model calculations reproduce this shape coexistence, predicting further a rapid transition from spherical to deformed ground states with $^{78}$Ni as turning point. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05978v1-abstract-full').style.display = 'none'; document.getElementById('1912.05978v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 569, 53-58 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.00667">arXiv:1908.00667</a> <span> [<a href="https://arxiv.org/pdf/1908.00667">pdf</a>, <a href="https://arxiv.org/ps/1908.00667">ps</a>, <a href="https://arxiv.org/format/1908.00667">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.100.064604">10.1103/PhysRevC.100.064604 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Toward a reliable description of ${(p,pN)}$ reactions in the distorted-wave impulse approximation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Phuc%2C+N+T+T">Nguyen Tri Toan Phuc</a>, <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1908.00667v2-abstract-short" style="display: inline;"> Background: Proton-induced nucleon knockout $(p,pN)$ reactions have been successfully used to study the single-particle nature of stable nuclei in normal kinematics with the distorted-wave impulse approximation (DWIA) framework. Recently, these reactions have been applied to rare-isotope beams at intermediate energies in inverse kinematics to study the quenching of spectroscopic factors. Purpose… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.00667v2-abstract-full').style.display = 'inline'; document.getElementById('1908.00667v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.00667v2-abstract-full" style="display: none;"> Background: Proton-induced nucleon knockout $(p,pN)$ reactions have been successfully used to study the single-particle nature of stable nuclei in normal kinematics with the distorted-wave impulse approximation (DWIA) framework. Recently, these reactions have been applied to rare-isotope beams at intermediate energies in inverse kinematics to study the quenching of spectroscopic factors. Purpose: Our goal is to investigate the effects of various corrections and uncertainties within the standard DWIA formalism on the $(p,pN)$ cross sections. The consistency of the extracted reduction factors between DWIA and other methods is also evaluated. Method: We analyze the $(p,2p)$ and $(p,pn)$ reactions data measured at the R$^3$B/LAND setup at GSI for carbon, nitrogen, and oxygen isotopes in the incident energy range of 300--450 MeV/u. Cross sections and reduction factors are calculated by using the DWIA method. The transverse momentum distribution of the $^{12}$C($p$,$2p$)$^{11}$B reaction is also investigated. Results: We have found that including the nonlocality corrections and the M酶ller factor affects the cross sections considerably. The proton-neutron asymmetry dependence of reduction factors extracted by the DWIA calculation is very weak and consistent with those given by other reaction methods and \textit{ab initio} structure calculations. Conclusions: The results found in this work provide a detailed investigation of the DWIA method for $(p,pN)$ reactions at intermediate energies. They also suggest that some higher-order effects, which is essential for an accurate cross-section description at large recoil momentum, is missing in the current DWIA and other reaction models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.00667v2-abstract-full').style.display = 'none'; document.getElementById('1908.00667v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NITEP 24 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 100, 064604 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.06622">arXiv:1905.06622</a> <span> [<a href="https://arxiv.org/pdf/1905.06622">pdf</a>, <a href="https://arxiv.org/ps/1905.06622">ps</a>, <a href="https://arxiv.org/format/1905.06622">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.100.044601">10.1103/PhysRevC.100.044601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantitative description of the $^{20}$Ne($p$,$p伪$)$^{16}$O cross section as a means of probing the surface $伪$ amplitude </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yoshida%2C+K">Kazuki Yoshida</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiba%2C+Y">Yohei Chiba</a>, <a href="/search/nucl-ex?searchtype=author&query=Kimura%2C+M">Masaaki Kimura</a>, <a href="/search/nucl-ex?searchtype=author&query=Taniguchi%2C+Y">Yasutaka Taniguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kanada-En%27yo%2C+Y">Yoshiko Kanada-En'yo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1905.06622v2-abstract-short" style="display: inline;"> The proton-induced $伪$ knockout reaction has been utilized for decades to investigate the $伪$ cluster states of nuclei, of the ground state in particular. However, even in recent years, it is reported that the deduced $伪$ spectroscopic factors from $伪$ knockout experiments and reaction analyses with a phenomenological $伪$ cluster wave function diverge depending on the kinematical condition of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.06622v2-abstract-full').style.display = 'inline'; document.getElementById('1905.06622v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.06622v2-abstract-full" style="display: none;"> The proton-induced $伪$ knockout reaction has been utilized for decades to investigate the $伪$ cluster states of nuclei, of the ground state in particular. However, even in recent years, it is reported that the deduced $伪$ spectroscopic factors from $伪$ knockout experiments and reaction analyses with a phenomenological $伪$ cluster wave function diverge depending on the kinematical condition of the reaction. In the present study we examine the theoretical description of the $^{20}$Ne($p$,$p伪$)$^{16}$O cross section based on the antisymmetrized molecular dynamics and the distorted wave impulse approximation by comparing with existing experimental data. We also investigate the correspondence between the $伪$ cluster wave function and the $伪$ knockout cross section. The existing $^{20}$Ne($p$,$p伪$)$^{16}$O data at 101.5 MeV is well reproduced by the present framework. Due to the peripherality of the reaction, the surface region of the cluster wave function is selectively reflected to the knockout cross section. A quantitatively reliable $伪$ cluster wave function, $p$-$伪$ cross section, and distorting potentials between scattering particles, $伪$-$^{16}$O in particular, are crucial for the quantitative description of the ($p$,$p伪$) cross section. Due to the peripherality of the reaction, the ($p$,$p伪$) cross section is a good probe for the surface $伪$ amplitude. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.06622v2-abstract-full').style.display = 'none'; document.getElementById('1905.06622v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 100, 044601 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.10113">arXiv:1810.10113</a> <span> [<a href="https://arxiv.org/pdf/1810.10113">pdf</a>, <a href="https://arxiv.org/format/1810.10113">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.212502">10.1103/PhysRevLett.124.212502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> How different is the core of $^{25}$F from $^{24}$O$_{g.s.}$? </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Tang%2C+T+L">T. L. Tang</a>, <a href="/search/nucl-ex?searchtype=author&query=Uesaka%2C+T">T. Uesaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Kawase%2C+S">S. Kawase</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Dozono%2C+M">M. Dozono</a>, <a href="/search/nucl-ex?searchtype=author&query=Fujii%2C+T">T. Fujii</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukuda%2C+N">N. Fukuda</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukunaga%2C+T">T. Fukunaga</a>, <a href="/search/nucl-ex?searchtype=author&query=Galindo-Uribarri%2C+A">A. Galindo-Uribarri</a>, <a href="/search/nucl-ex?searchtype=author&query=Hwang%2C+S+H">S. H. Hwang</a>, <a href="/search/nucl-ex?searchtype=author&query=Inabe%2C+N">N. Inabe</a>, <a href="/search/nucl-ex?searchtype=author&query=Kameda%2C+D">D. Kameda</a>, <a href="/search/nucl-ex?searchtype=author&query=Kawahara%2C+T">T. Kawahara</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=Kisamori%2C+K">K. Kisamori</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+M">M. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubo%2C+T">T. Kubo</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Y. Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Kusaka%2C+K">K. Kusaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+C+S">C. S. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Maeda%2C+Y">Y. Maeda</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsubara%2C+H">H. Matsubara</a>, <a href="/search/nucl-ex?searchtype=author&query=Michimasa%2C+S">S. Michimasa</a>, <a href="/search/nucl-ex?searchtype=author&query=Miya%2C+H">H. Miya</a>, <a href="/search/nucl-ex?searchtype=author&query=Noro%2C+T">T. Noro</a> , et al. (22 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1810.10113v1-abstract-short" style="display: inline;"> The neutron-shell structure of $^{25}$F was studied using quasi-free (p,2p) knockout reaction at 270A MeV in inverse kinematics. The sum of spectroscopic factors of $蟺$0d$_{5/2}$ orbital is found to be $1.0 \pm 0.3$. However, the spectroscopic factor for the ground-state to ground-state transition ($^{25}$F, $^{24}$O$_{g.s.}$) is only $0.36\pm 0.13$, and $^{24}$O excited states are produced from t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.10113v1-abstract-full').style.display = 'inline'; document.getElementById('1810.10113v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.10113v1-abstract-full" style="display: none;"> The neutron-shell structure of $^{25}$F was studied using quasi-free (p,2p) knockout reaction at 270A MeV in inverse kinematics. The sum of spectroscopic factors of $蟺$0d$_{5/2}$ orbital is found to be $1.0 \pm 0.3$. However, the spectroscopic factor for the ground-state to ground-state transition ($^{25}$F, $^{24}$O$_{g.s.}$) is only $0.36\pm 0.13$, and $^{24}$O excited states are produced from the 0d$_{5/2}$ proton knockout. The result shows that the $^{24}$O core of $^{25}$F nucleus significantly differs from a free $^{24}$O nucleus, and the core consists of 35% $^{24}$O$_{g.s}$. and 65% excited $^{24}$O. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.10113v1-abstract-full').style.display = 'none'; document.getElementById('1810.10113v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.03858">arXiv:1603.03858</a> <span> [<a href="https://arxiv.org/pdf/1603.03858">pdf</a>, <a href="https://arxiv.org/ps/1603.03858">ps</a>, <a href="https://arxiv.org/format/1603.03858">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Determination of a dineutron correlation in Borromean nuclei via a quasi-free knockout ($p,pn$) reaction? </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kikuchi%2C+Y">Yuma Kikuchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Kubota%2C+Y">Yuki Kubota</a>, <a href="/search/nucl-ex?searchtype=author&query=Sasano%2C+M">Masaki Sasano</a>, <a href="/search/nucl-ex?searchtype=author&query=Uesaka%2C+T">Tomohiro Uesaka</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1603.03858v2-abstract-short" style="display: inline;"> To discuss the dineutron correlation in the ground state, the quasi-free neutron knockout reaction on $^6$He is investigated.In the present work, the momentum distribution of the two emitted neutrons is calculated with the $伪$~+~$n$~+~$n$ three-body model and a simple reaction model to assess the effects of the knockout process via the $^5$He resonance and the target dependence in the momentum dis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.03858v2-abstract-full').style.display = 'inline'; document.getElementById('1603.03858v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.03858v2-abstract-full" style="display: none;"> To discuss the dineutron correlation in the ground state, the quasi-free neutron knockout reaction on $^6$He is investigated.In the present work, the momentum distribution of the two emitted neutrons is calculated with the $伪$~+~$n$~+~$n$ three-body model and a simple reaction model to assess the effects of the knockout process via the $^5$He resonance and the target dependence in the momentum distribution. A clear signature of the dineutron correlation can be obtained by choosing the kinematical condition so the process via the $^5$He resonance is excluded because the $^5$He resonance drastically changes the momentum distribution. Using the proton target is important in the quantitative discussion on the dineutron correlation by the knockout reaction. In addition to theoretical arguments, a possible experimental setup to determine the dineutron correlation via the quasi-free knockout reaction is considered. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.03858v2-abstract-full').style.display = 'none'; document.getElementById('1603.03858v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 10 figures, 2 tables, to be published in PTEP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1511.05729">arXiv:1511.05729</a> <span> [<a href="https://arxiv.org/pdf/1511.05729">pdf</a>, <a href="https://arxiv.org/format/1511.05729">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1742-6596/724/1/012005">10.1088/1742-6596/724/1/012005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Recent developments in the eikonal description of the breakup of exotic nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Capel%2C+P">P. Capel</a>, <a href="/search/nucl-ex?searchtype=author&query=Colomer%2C+F">F. Colomer</a>, <a href="/search/nucl-ex?searchtype=author&query=Esbensen%2C+H">H. Esbensen</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">T. Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Johnson%2C+R+C">R. C. Johnson</a>, <a href="/search/nucl-ex?searchtype=author&query=Nunes%2C+F+M">F. M. Nunes</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1511.05729v1-abstract-short" style="display: inline;"> The study of exotic nuclear structures, such as halo nuclei, is usually performed through nuclear reactions. An accurate reaction model coupled to a realistic description of the projectile is needed to correctly interpret experimental data. In this contribution, we briefly summarise the assumptions made within the modelling of reactions involving halo nuclei. We describe briefly the Continuum-Disc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.05729v1-abstract-full').style.display = 'inline'; document.getElementById('1511.05729v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1511.05729v1-abstract-full" style="display: none;"> The study of exotic nuclear structures, such as halo nuclei, is usually performed through nuclear reactions. An accurate reaction model coupled to a realistic description of the projectile is needed to correctly interpret experimental data. In this contribution, we briefly summarise the assumptions made within the modelling of reactions involving halo nuclei. We describe briefly the Continuum-Discretised Coupled Channel method (CDCC) and the Dynamical Eikonal Approximation (DEA) in particular and present a comparison between them for the breakup of 15C on Pb at 68AMeV. We show the problem faced by the models based on the eikonal approximation at low energy and detail a correction that enables their extension down to lower beam energies. A new reaction observable is also presented. It consists of the ratio between angular distributions for two different processes, such as elastic scattering and breakup. This ratio is completely independent of the reaction mechanism and hence is more sensitive to the projectile structure than usual reaction observables, which makes it a very powerful tool to study exotic structures far from stability. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.05729v1-abstract-full').style.display = 'none'; document.getElementById('1511.05729v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 November, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Contribution to the proceedings of the XXI International School on Nuclear Physics and Applications & the International Symposium on Exotic Nuclei, dedicated to the 60th Anniversary of the JINR (Dubna) (Varna, Bulgaria, 6-12 September 2015), 7 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1511.03862">arXiv:1511.03862</a> <span> [<a href="https://arxiv.org/pdf/1511.03862">pdf</a>, <a href="https://arxiv.org/ps/1511.03862">ps</a>, <a href="https://arxiv.org/format/1511.03862">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.93.034606">10.1103/PhysRevC.93.034606 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing surface distributions of $伪$ clusters in $^{20}$Ne via $伪$-transfer reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">Tokuro Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Taniguchi%2C+Y">Yasutaka Taniguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Suhara%2C+T">Tadahiro Suhara</a>, <a href="/search/nucl-ex?searchtype=author&query=Kanada-En%27yo%2C+Y">Yoshiko Kanada-En'yo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1511.03862v2-abstract-short" style="display: inline;"> Direct evidence of the $伪$-cluster manifestation in bound states has not been obtained yet, although a number of experimental studies were carried out to extract the information of the clustering. In particular in conventional analyses of $伪$-transfer reactions, there exist a few significant problems on reaction models, which are insufficient to qualitatively discuss the cluster structure. We aim… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.03862v2-abstract-full').style.display = 'inline'; document.getElementById('1511.03862v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1511.03862v2-abstract-full" style="display: none;"> Direct evidence of the $伪$-cluster manifestation in bound states has not been obtained yet, although a number of experimental studies were carried out to extract the information of the clustering. In particular in conventional analyses of $伪$-transfer reactions, there exist a few significant problems on reaction models, which are insufficient to qualitatively discuss the cluster structure. We aim to verify the development of the $伪$-cluster structure from observables. As the first application, we plan to extract the spatial information of the cluster structure of the $^{20}$Ne nucleus in its ground state through the cross section of the $伪$-transfer reaction $^{16}$O($^6$Li,~$d$)$^{20}$Ne. For the analysis of the transfer reaction, we work with the coupled-channel Born approximation (CCBA) approach, in which the breakup effect of $^6$Li is explicitly taken into account by means of the continuum-discretized coupled-channel method based on the three-body $伪+ d + {}^{16}$O model. The two methods are adopted to calculate the overlap function between $^{20}$Ne and $伪+ {}^{16}$O; one is the microscopic cluster model (MCM) with the generator coordinate method, and the other is the phenomenological two-body potential model (PM). We show that the CCBA calculation with the MCM wave function gives a significant improvement of the theoretical result on the angular distribution of the transfer cross section, which is consistent with the experimental data. Employing the PM, it is discussed which region of the cluster wave function is probed on the transfer cross section. It is found that the surface region of the cluster wave function is sensitive to the cross section. The present work is situated as the first step in obtaining important information to systematically investigate the cluster structure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.03862v2-abstract-full').style.display = 'none'; document.getElementById('1511.03862v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 93, 034606 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.4690">arXiv:1404.4690</a> <span> [<a href="https://arxiv.org/pdf/1404.4690">pdf</a>, <a href="https://arxiv.org/ps/1404.4690">ps</a>, <a href="https://arxiv.org/format/1404.4690">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.91.014604">10.1103/PhysRevC.91.014604 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Breakup and finite-range effects on the 8B(d,n)9C reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">Tokuro Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Yahiro%2C+M">Masanobu Yahiro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1404.4690v2-abstract-short" style="display: inline;"> The astrophysical factor of $^8$B($p$,$纬$)$^9$C at zero energy, $S_{18}(0)$, is determined by a three-body coupled-channels analysis of the transfer reaction $^{8}$B($d$,$n$)$^{9}$C at 14.4 MeV/nucleon. Effects of the breakup channels of $d$ and $^9$C are investigated with the continuum-discretized coupled-channels method. It is found that, in the initial and final channels, respectively, the tran… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.4690v2-abstract-full').style.display = 'inline'; document.getElementById('1404.4690v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.4690v2-abstract-full" style="display: none;"> The astrophysical factor of $^8$B($p$,$纬$)$^9$C at zero energy, $S_{18}(0)$, is determined by a three-body coupled-channels analysis of the transfer reaction $^{8}$B($d$,$n$)$^{9}$C at 14.4 MeV/nucleon. Effects of the breakup channels of $d$ and $^9$C are investigated with the continuum-discretized coupled-channels method. It is found that, in the initial and final channels, respectively, the transfer process through the breakup states of $d$ and $^9$C, its interference with that through their ground states in particular, gives a large increase in the transfer cross section. The finite-range effects with respect to the proton-neutron relative coordinate are found to be about 20%. As a result of the present analysis, $S_{18}(0)=22 \pm 6~{\rm eV~b}$ is obtained, which is smaller than the result of the previous distorted-wave Born approximation analysis by about 51%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.4690v2-abstract-full').style.display = 'none'; document.getElementById('1404.4690v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 91, 014604 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1210.0277">arXiv:1210.0277</a> <span> [<a href="https://arxiv.org/pdf/1210.0277">pdf</a>, <a href="https://arxiv.org/ps/1210.0277">ps</a>, <a href="https://arxiv.org/format/1210.0277">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.88.024616">10.1103/PhysRevC.88.024616 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Interplay between the 0+_2 resonance and the nonresonant continuum of the drip-line two-neutron halo nucleus 22C </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Myo%2C+T">Takayuki Myo</a>, <a href="/search/nucl-ex?searchtype=author&query=Furumoto%2C+T">Takenori Furumoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsumoto%2C+T">Takuma Matsumoto</a>, <a href="/search/nucl-ex?searchtype=author&query=Yahiro%2C+M">Masanobu Yahiro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1210.0277v1-abstract-short" style="display: inline;"> The breakup cross section (BUX) of 22C by 12C at 250 MeV/nucleon is evaluated by the continuum-discretized coupled-channels method incorporating the cluster-orbital shell model (COSM) wave functions. Contributions of the low-lying 0+_2 and 2+_1 resonances predicted by COSM to the BUX are investigated. The 2+_1 resonance gives a narrow peak in the BUX, as in usual resonant reactions, whereas the 0+… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0277v1-abstract-full').style.display = 'inline'; document.getElementById('1210.0277v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.0277v1-abstract-full" style="display: none;"> The breakup cross section (BUX) of 22C by 12C at 250 MeV/nucleon is evaluated by the continuum-discretized coupled-channels method incorporating the cluster-orbital shell model (COSM) wave functions. Contributions of the low-lying 0+_2 and 2+_1 resonances predicted by COSM to the BUX are investigated. The 2+_1 resonance gives a narrow peak in the BUX, as in usual resonant reactions, whereas the 0+_2 resonant cross section has a peculiar shape due to the coupling to the nonresonant continuum, i.e., the Fano effect. By changing the scattering angle of 22C after the breakup, a variety of shapes of the 0+_2 resonant cross sections is obtained. Mechanism of the appearance of the sizable Fano effect in the breakup of 22C is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.0277v1-abstract-full').style.display = 'none'; document.getElementById('1210.0277v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 3 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.6034">arXiv:1205.6034</a> <span> [<a href="https://arxiv.org/pdf/1205.6034">pdf</a>, <a href="https://arxiv.org/ps/1205.6034">ps</a>, <a href="https://arxiv.org/format/1205.6034">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.86.022801">10.1103/PhysRevC.86.022801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of 8B(p,gamma)9C reaction rate from 9C breakup </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">Tokuro Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Minomo%2C+K">Kosho Minomo</a>, <a href="/search/nucl-ex?searchtype=author&query=Yahiro%2C+M">Masanobu Yahiro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1205.6034v2-abstract-short" style="display: inline;"> The astrophysical factor of the 8B(p,gamma)9C at zero energy, S18(0), is determined from three-body model analysis of 9C breakup processes. The elastic breakup 208Pb(9C,p8B)208Pb at 65 MeV/nucleon and the one-proton removal reaction of 9C at 285 MeV/nucleon on C and Al targets are calculated with the continuum-discretized coupled-channels method (CDCC) and the eikonal reaction theory (ERT), respec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.6034v2-abstract-full').style.display = 'inline'; document.getElementById('1205.6034v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.6034v2-abstract-full" style="display: none;"> The astrophysical factor of the 8B(p,gamma)9C at zero energy, S18(0), is determined from three-body model analysis of 9C breakup processes. The elastic breakup 208Pb(9C,p8B)208Pb at 65 MeV/nucleon and the one-proton removal reaction of 9C at 285 MeV/nucleon on C and Al targets are calculated with the continuum-discretized coupled-channels method (CDCC) and the eikonal reaction theory (ERT), respectively. The asymptotic normalization coefficient (ANC) of 9C in the p-8B configuration extracted from the two reactions show good consistency, in contrast to in the previous studies. As a result of the present analysis, S18(0) = 66 \pm 10 eVb is obtained. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.6034v2-abstract-full').style.display = 'none'; document.getElementById('1205.6034v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 August, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 3 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 86, 022801(R) (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.4296">arXiv:1205.4296</a> <span> [<a href="https://arxiv.org/pdf/1205.4296">pdf</a>, <a href="https://arxiv.org/ps/1205.4296">ps</a>, <a href="https://arxiv.org/format/1205.4296">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2013.07.038">10.1016/j.physletb.2013.07.038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Possible evidence of tensor interactions in 16O observed via (p,d) reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ong%2C+H+J">H. J. Ong</a>, <a href="/search/nucl-ex?searchtype=author&query=Tanihata%2C+I">I. Tanihata</a>, <a href="/search/nucl-ex?searchtype=author&query=Tamii%2C+A">A. Tamii</a>, <a href="/search/nucl-ex?searchtype=author&query=Myo%2C+T">T. Myo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">K. Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Fukuda%2C+M">M. Fukuda</a>, <a href="/search/nucl-ex?searchtype=author&query=Hirota%2C+K">K. Hirota</a>, <a href="/search/nucl-ex?searchtype=author&query=Ikeda%2C+K">K. Ikeda</a>, <a href="/search/nucl-ex?searchtype=author&query=Ishikawa%2C+D">D. Ishikawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Kawabata%2C+T">T. Kawabata</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsubara%2C+H">H. Matsubara</a>, <a href="/search/nucl-ex?searchtype=author&query=Matsuta%2C+K">K. Matsuta</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihara%2C+M">M. Mihara</a>, <a href="/search/nucl-ex?searchtype=author&query=Naito%2C+T">T. Naito</a>, <a href="/search/nucl-ex?searchtype=author&query=Nishimura%2C+D">D. Nishimura</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogawa%2C+Y">Y. Ogawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Okamura%2C+H">H. Okamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Ozawa%2C+A">A. Ozawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Pang%2C+D+Y">D. Y. Pang</a>, <a href="/search/nucl-ex?searchtype=author&query=Sakaguchi%2C+H">H. Sakaguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Sekiguchi%2C+K">K. Sekiguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+T">T. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Taniguchi%2C+M">M. Taniguchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Takashina%2C+M">M. Takashina</a>, <a href="/search/nucl-ex?searchtype=author&query=Toki%2C+H">H. Toki</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1205.4296v1-abstract-short" style="display: inline;"> We have measured 16O(p,d) reaction using 198-, 295- and 392-MeV proton beams to search for a direct evidence on the effect of the tensor interactions in light nucleus. Differential cross sections of the one-neutron transfer reactions populating the ground states and several low-lying excited states in 15O were measured. Comparing the ratios of the cross sections for each excited state to the one f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.4296v1-abstract-full').style.display = 'inline'; document.getElementById('1205.4296v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.4296v1-abstract-full" style="display: none;"> We have measured 16O(p,d) reaction using 198-, 295- and 392-MeV proton beams to search for a direct evidence on the effect of the tensor interactions in light nucleus. Differential cross sections of the one-neutron transfer reactions populating the ground states and several low-lying excited states in 15O were measured. Comparing the ratios of the cross sections for each excited state to the one for the ground state over a wide range of momentum transfer, we found a marked enhancement for the positive-parity state(s). The observation indicates large components of high-momentum neutrons in the initial ground-state configurations, due possibly to the tensor interactions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.4296v1-abstract-full').style.display = 'none'; document.getElementById('1205.4296v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1104.1235">arXiv:1104.1235</a> <span> [<a href="https://arxiv.org/pdf/1104.1235">pdf</a>, <a href="https://arxiv.org/ps/1104.1235">ps</a>, <a href="https://arxiv.org/format/1104.1235">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1143/PTP.125.1193">10.1143/PTP.125.1193 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Three-Body Model Analysis of Subbarrier alpha Transfer Reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fukui%2C+T">Tokuro Fukui</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Yahiro%2C+M">Masanobu Yahiro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1104.1235v1-abstract-short" style="display: inline;"> Subbarrier alpha transfer reaction 13C(6Li,d)17O(6.356 MeV, 1/2+) at 3.6 MeV is analyzed with a alpha + d + 13C three-body model, and the asymptotic normalization coefficient (ANC) for alpha + 13C --> 17O(6.356 MeV, 1/2+), which essentially determines the reaction rate of 13C(alpha,n)16O, is extracted. Breakup effects of 6Li in the initial channel and those of 17O in the final channel are investig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.1235v1-abstract-full').style.display = 'inline'; document.getElementById('1104.1235v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1104.1235v1-abstract-full" style="display: none;"> Subbarrier alpha transfer reaction 13C(6Li,d)17O(6.356 MeV, 1/2+) at 3.6 MeV is analyzed with a alpha + d + 13C three-body model, and the asymptotic normalization coefficient (ANC) for alpha + 13C --> 17O(6.356 MeV, 1/2+), which essentially determines the reaction rate of 13C(alpha,n)16O, is extracted. Breakup effects of 6Li in the initial channel and those of 17O in the final channel are investigated with the continuum-discretized coupled-channels method (CDCC). The former is found to have a large back-coupling to the elastic channel, while the latter turns out significantly small. The transfer cross section calculated with Born approximation to the transition operator, including breakup states of 6Li, gives (C_{alpha 13C}{17O*})^2 =1.03 \pm 0.29 fm^{-1}. This result is consistent with the value obtained by the previous DWBA calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.1235v1-abstract-full').style.display = 'none'; document.getElementById('1104.1235v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 April, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 5 figures, accepted for publication in Progress of Theoretical Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog.Theor.Phys.125:1193-1204,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0905.0007">arXiv:0905.0007</a> <span> [<a href="https://arxiv.org/pdf/0905.0007">pdf</a>, <a href="https://arxiv.org/ps/0905.0007">ps</a>, <a href="https://arxiv.org/format/0905.0007">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1143/PTP.122.1055">10.1143/PTP.122.1055 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantum three-body calculation of the nonresonant triple-伪reaction rate at low temperatures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Kan%2C+M">Masataka Kan</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamimura%2C+M">Masayasu Kamimura</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0905.0007v3-abstract-short" style="display: inline;"> The triple-伪reaction rate is re-evaluated by directly solving the three-body Schr枚dinger equation. The resonant and nonresonant processes are treated on the same footing using the continuum-discretized coupled-channels method for three-body scattering. Accurate description of the 伪-伪nonresonant states significantly quenches the Coulomb barrier between the two-伪's and the third 伪particle. Consequ… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0905.0007v3-abstract-full').style.display = 'inline'; document.getElementById('0905.0007v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0905.0007v3-abstract-full" style="display: none;"> The triple-伪reaction rate is re-evaluated by directly solving the three-body Schr枚dinger equation. The resonant and nonresonant processes are treated on the same footing using the continuum-discretized coupled-channels method for three-body scattering. Accurate description of the 伪-伪nonresonant states significantly quenches the Coulomb barrier between the two-伪's and the third 伪particle. Consequently, the 伪-伪nonresonant continuum states below the resonance at 92.04 keV, i.e., the ground state of 8Be, give markedly larger contribution at low temperatures than in foregoing studies. We show that Nomoto's method for three-body nonresonant capture processes, which is adopted in the NACRE compilation and many other studies, is a crude approximation of the accurate quantum three-body model calculation. We find about 20 orders-of-magnitude enhancement of the triple-伪reaction rate around 10^7 K compared to the rate of NACRE. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0905.0007v3-abstract-full').style.display = 'none'; document.getElementById('0905.0007v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 May, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">To be published in Prog. Theor. Phys. Vol.121, No.4. More detailed description of numerical inputs, further discussion in relation to Nomoto's method (NACRE), new typeset using PTP TeX</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog.Theor.Phys.122:1055-1064,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0807.3799">arXiv:0807.3799</a> <span> [<a href="https://arxiv.org/pdf/0807.3799">pdf</a>, <a href="https://arxiv.org/ps/0807.3799">ps</a>, <a href="https://arxiv.org/format/0807.3799">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1143/PTP.120.767">10.1143/PTP.120.767 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A New Glauber Theory based on Multiple Scattering Theory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yahiro%2C+M">Masanobu Yahiro</a>, <a href="/search/nucl-ex?searchtype=author&query=Minomo%2C+K">Kosho Minomo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ogata%2C+K">Kazuyuki Ogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Kawai%2C+M">Mitsuji Kawai</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0807.3799v3-abstract-short" style="display: inline;"> Glauber theory for nucleus-nucleus scattering at high incident energies is reformulated so as to become applicable also for the scattering at intermediate energies. We test validity of the eikonal and adiabatic approximations used in the formulation, and discuss the relation between the present theory and the conventional Glauber calculations with either the empirical nucleon-nucleon profile fun… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0807.3799v3-abstract-full').style.display = 'inline'; document.getElementById('0807.3799v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0807.3799v3-abstract-full" style="display: none;"> Glauber theory for nucleus-nucleus scattering at high incident energies is reformulated so as to become applicable also for the scattering at intermediate energies. We test validity of the eikonal and adiabatic approximations used in the formulation, and discuss the relation between the present theory and the conventional Glauber calculations with either the empirical nucleon-nucleon profile function or the modified one including the in-medium effect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0807.3799v3-abstract-full').style.display = 'none'; document.getElementById('0807.3799v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 September, 2008; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 July, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog. Theor. Phys. 120 (2008), 767 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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