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</div> <div class="control"> <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/2410.14314">arXiv:2410.14314</a> <span> [<a href="https://arxiv.org/pdf/2410.14314">pdf</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> <p class="title is-5 mathjax"> Neutron-proton pairing in the unstable N=Z nuclei of the f-shell through two-nucleon transfer reactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=Jacob%2C+H">H. Jacob</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</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="2410.14314v1-abstract-short" style="display: inline;"> Pair transfer is a unique tool to study pairing correlations in nuclei. Neutron-proton pairing is investigated in the N=Z nuclei of the f-shell, through the reaction (p,3He) in inverse kinematics, that allows to populate at the same time the lowest J=0+, T=1 (isovector pairing) state and J=1+, T=0 (isoscalar pairing) state. Radioactive beams of 56Ni and 52Fe produced by fragmentation at the GANIL/… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.14314v1-abstract-full').style.display = 'inline'; document.getElementById('2410.14314v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.14314v1-abstract-full" style="display: none;"> Pair transfer is a unique tool to study pairing correlations in nuclei. Neutron-proton pairing is investigated in the N=Z nuclei of the f-shell, through the reaction (p,3He) in inverse kinematics, that allows to populate at the same time the lowest J=0+, T=1 (isovector pairing) state and J=1+, T=0 (isoscalar pairing) state. Radioactive beams of 56Ni and 52Fe produced by fragmentation at the GANIL/LISE facility combined with particle and gamma-ray detection make it possible to carry out this study from 48Cr (mid-shell nucleus) to 56Ni (doubly-magic nucleus). The cross-sections were extracted and compared with second-order distorted-wave born approximation (DWBA) calculations performed with neutron-proton amplitudes obtained from shell model calculations with GXPF1 interaction. Very low cross-sections for the J=1+,T=0 state (isoscalar channel) were observed. The cross-section for 56Ni is one of order of magnitude lower than for 40Ca showing a strong reduction of the isoscalar channel in the f-shell as compared to the sd-shell. On the other hand, the increase of the cross-section towards the middle of the shell for the isovector channel points towards a possible superfluid phase. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.14314v1-abstract-full').style.display = 'none'; document.getElementById('2410.14314v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">4 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/2409.12594">arXiv:2409.12594</a> <span> [<a href="https://arxiv.org/pdf/2409.12594">pdf</a>, <a href="https://arxiv.org/format/2409.12594">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> <p class="title is-5 mathjax"> Probing exotic cross-shell interactions at N=28 with single-neutron transfer on 47K </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Paxman%2C+C+J">C. J. Paxman</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Catford%2C+W+N">W. N. Catford</a>, <a href="/search/nucl-ex?searchtype=author&query=Lotay%2C+G">G. Lotay</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=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Orr%2C+N+A">N. A. Orr</a>, <a href="/search/nucl-ex?searchtype=author&query=Galtarossa%2C+F">F. Galtarossa</a>, <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Dudouet%2C+J">J. Dudouet</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=Ackermann%2C+D">D. Ackermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bednarczyk%2C+P">P. Bednarczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Benzoni%2C+G">G. Benzoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bracco%2C+A">A. Bracco</a>, <a href="/search/nucl-ex?searchtype=author&query=Canete%2C+L">L. Canete</a>, <a href="/search/nucl-ex?searchtype=author&query=Cederwall%2C+B">B. Cederwall</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemala%2C+M">M. Ciemala</a>, <a href="/search/nucl-ex?searchtype=author&query=Delahaye%2C+P">P. Delahaye</a>, <a href="/search/nucl-ex?searchtype=author&query=Doherty%2C+D+T">D. T. Doherty</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a> , et al. (54 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="2409.12594v1-abstract-short" style="display: inline;"> We present the first measurement of the $^{47}$K($d,p纬$)$^{48}$K transfer reaction, performed in inverse kinematics using a reaccelerated beam of $^{47}$K. The level scheme of $^{48}$K has been greatly extended with nine new bound excited states identified and spectroscopic factors deduced. Detailed comparisons with SDPF-U and SDPF-MU shell-model calculations reveal a number of discrepancies with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12594v1-abstract-full').style.display = 'inline'; document.getElementById('2409.12594v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.12594v1-abstract-full" style="display: none;"> We present the first measurement of the $^{47}$K($d,p纬$)$^{48}$K transfer reaction, performed in inverse kinematics using a reaccelerated beam of $^{47}$K. The level scheme of $^{48}$K has been greatly extended with nine new bound excited states identified and spectroscopic factors deduced. Detailed comparisons with SDPF-U and SDPF-MU shell-model calculations reveal a number of discrepancies with these results, and a preference for SDPF-MU is found. Intriguingly, an apparent systematic overestimation of spectroscopic factors and a poor reproduction of the energies for 1$^-$ states suggests that the mixing between the $蟺s^{\,\,\,1}_{1/2} d^{\,\,\,4}_{3/2}$ and $蟺s^{\,\,\,2}_{1/2} d^{\,\,\,3}_{3/2}$ proton configurations in $^{48}$K is not correctly described using current interactions, challenging our descriptions of light $N=28$ nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12594v1-abstract-full').style.display = 'none'; document.getElementById('2409.12594v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">7 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/2405.14305">arXiv:2405.14305</a> <span> [<a href="https://arxiv.org/pdf/2405.14305">pdf</a>, <a href="https://arxiv.org/format/2405.14305">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.131.262501">10.1103/PhysRevLett.131.262501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High-precision spectroscopy of $^{20}$O benchmarking ab-initio calculations in light nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Zanon%2C+I">I. Zanon</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Goasduff%2C+A">A. Goasduff</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=Miyagi%2C+T">T. Miyagi</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=Ciema%C5%82a%2C+M">M. Ciema艂a</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Rejmund%2C+M">M. Rejmund</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+L">L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackermann%2C+D">D. Ackermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Benzoni%2C+G">G. Benzoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Boston%2C+A+J">A. J. Boston</a>, <a href="/search/nucl-ex?searchtype=author&query=Boston%2C+H+C">H. C. Boston</a>, <a href="/search/nucl-ex?searchtype=author&query=Bottoni%2C+S">S. Bottoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bracco%2C+A">A. Bracco</a>, <a href="/search/nucl-ex?searchtype=author&query=Brugnara%2C+D">D. Brugnara</a>, <a href="/search/nucl-ex?searchtype=author&query=de+France%2C+G">G. de France</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Sereville%2C+N">N. de Sereville</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</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="2405.14305v1-abstract-short" style="display: inline;"> The excited states of unstable $^{20}$O were investigated via $纬$-ray spectroscopy following the $^{19}$O$(d,p)^{20}$O reaction at 8 $A$MeV. By exploiting the Doppler Shift Attenuation Method, the lifetime of the 2$^+_2$ and 3$^+_1$ states were firmly established. From the $纬$-ray branching and E2/M1 mixing ratios for transitions deexciting the 2$^+_2$ and 3$^+_1$ states, the B(E2) and B(M1) were… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14305v1-abstract-full').style.display = 'inline'; document.getElementById('2405.14305v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.14305v1-abstract-full" style="display: none;"> The excited states of unstable $^{20}$O were investigated via $纬$-ray spectroscopy following the $^{19}$O$(d,p)^{20}$O reaction at 8 $A$MeV. By exploiting the Doppler Shift Attenuation Method, the lifetime of the 2$^+_2$ and 3$^+_1$ states were firmly established. From the $纬$-ray branching and E2/M1 mixing ratios for transitions deexciting the 2$^+_2$ and 3$^+_1$ states, the B(E2) and B(M1) were determined. Various chiral effective field theory Hamiltonians, describing the nuclear properties beyond ground states, along with a standard USDB interaction, were compared with the experimentally obtained data. Such a comparison for a large set of $纬$-ray transition probabilities with the valence space in medium similarity renormalization group ab-initio calculations was performed for the first time in a nucleus far from stability. It was shown that the ab-initio approaches using chiral EFT forces are challenged by detailed high-precision spectroscopic properties of nuclei. The reduced transition probabilities were found to be a very constraining test of the performance of the ab-initio models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14305v1-abstract-full').style.display = 'none'; document.getElementById('2405.14305v1-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 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">Supplemental Material available</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letter 131, 262501 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.15591">arXiv:2311.15591</a> <span> [<a href="https://arxiv.org/pdf/2311.15591">pdf</a>, <a href="https://arxiv.org/ps/2311.15591">ps</a>, <a href="https://arxiv.org/format/2311.15591">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> <p class="title is-5 mathjax"> Overview of the experimental quest for the giant pairing vibration </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Assi%C3%A9%2C+M">M. Assi茅</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="2311.15591v1-abstract-short" style="display: inline;"> The search for the giant pairing vibration (GPV) has a long standing history since the 1970's when it was predicted. First experimental measurements focused on (p,t) transfer reactions in the heavy nuclei and did not show convincing evidence. The discovery of a signal compatible with the GPV in the light carbon isotopes has renewed the interest for the GPV. It triggered new theoretical models show… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.15591v1-abstract-full').style.display = 'inline'; document.getElementById('2311.15591v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.15591v1-abstract-full" style="display: none;"> The search for the giant pairing vibration (GPV) has a long standing history since the 1970's when it was predicted. First experimental measurements focused on (p,t) transfer reactions in the heavy nuclei and did not show convincing evidence. The discovery of a signal compatible with the GPV in the light carbon isotopes has renewed the interest for the GPV. It triggered new theoretical models showing that the GPV in the heavy nuclei might be too wide or too melted to be observed and triggered new experiments with radioactive probes based on ($^{6}$He,$^{4}$He) transfer. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.15591v1-abstract-full').style.display = 'none'; document.getElementById('2311.15591v1-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 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">arXiv admin note: substantial text overlap with arXiv:1905.01339</span> </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/2310.10681">arXiv:2310.10681</a> <span> [<a href="https://arxiv.org/pdf/2310.10681">pdf</a>, <a href="https://arxiv.org/ps/2310.10681">ps</a>, <a href="https://arxiv.org/format/2310.10681">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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"> Overview and performance of the 2023 MUGAST@LISE campaign at GANIL </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Jacob%2C+H">H. Jacob</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=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</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="2310.10681v1-abstract-short" style="display: inline;"> MUGAST is a state-of-the-art silicon array combining trapezoidal and square shaped double-sided silicon strip detectors (DSSD) to four MUST2 telescopes. Coupled to a 纬-ray spectrometer, the excellent angular coverage and compacity of the MUGAST array make it an ideal tool for the study of transfer reactions. It is a first step toward the development of the new generation of silicon arrays using pu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.10681v1-abstract-full').style.display = 'inline'; document.getElementById('2310.10681v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.10681v1-abstract-full" style="display: none;"> MUGAST is a state-of-the-art silicon array combining trapezoidal and square shaped double-sided silicon strip detectors (DSSD) to four MUST2 telescopes. Coupled to a 纬-ray spectrometer, the excellent angular coverage and compacity of the MUGAST array make it an ideal tool for the study of transfer reactions. It is a first step toward the development of the new generation of silicon arrays using pulse shape analysis (PSA) for particle identification, such as the future GRIT array developed by our collaboration. In recent years, MUGAST has been widely used at GANIL. First with the AGATA 纬-ray spectrometer and the VAMOS large acceptance spectrometer for the study of ISOL beams from the SPIRAL1 facility. It is now coupled with twelve EXOGAM clovers and to a new zero degree detection system at the end of the LISE fragmentation beamline. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.10681v1-abstract-full').style.display = 'none'; document.getElementById('2310.10681v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.04282">arXiv:2310.04282</a> <span> [<a href="https://arxiv.org/pdf/2310.04282">pdf</a>, <a href="https://arxiv.org/format/2310.04282">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> <p class="title is-5 mathjax"> Multi-alpha Boson Gas state in Fusion Evaporation Reaction and Three-body Force </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+T">Taofeng Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z">Ziming Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wiringa%2C+R+B">R. B. Wiringa</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+M">Minliang Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jiansong Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yanyun Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+Q">Qinghua He</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+Z">Zhiyu Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C">Chengjian Lin</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=Ayyad%2C+Y">Y. Ayyad</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Zhen Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F">Fangfang Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhihao Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+S">Song Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Y">Yue Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+W">Wei Jiang</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+F">F. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Lu%2C+C">Chengui Lu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J">Junbing Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">Peng Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Napolitani%2C+P">P. Napolitani</a>, <a href="/search/nucl-ex?searchtype=author&query=Verde%2C+G">G. Verde</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jianguo Wang</a> , et al. (11 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="2310.04282v1-abstract-short" style="display: inline;"> The experimental evidence for the $伪$ Boson gas state in the $^{11}$C+$^{12}$C$\rightarrow$$^{23}$Mg$^{\ast}$ fusion evaporation reaction is presented. By measuring the $伪$ emission spectrum with multiplicity 2 and 3, we provide insight into the existence of a three-body force among $伪$ particles. The observed spectrum exhibited distinct tails corresponding to $伪$ particles emitted in pairs and tr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04282v1-abstract-full').style.display = 'inline'; document.getElementById('2310.04282v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.04282v1-abstract-full" style="display: none;"> The experimental evidence for the $伪$ Boson gas state in the $^{11}$C+$^{12}$C$\rightarrow$$^{23}$Mg$^{\ast}$ fusion evaporation reaction is presented. By measuring the $伪$ emission spectrum with multiplicity 2 and 3, we provide insight into the existence of a three-body force among $伪$ particles. The observed spectrum exhibited distinct tails corresponding to $伪$ particles emitted in pairs and triplets consistent well with the model-calculations of AV18-UX and chiral effective field theory of NV2-3-la*, indicating the formation of $伪$ clusters with three-body force in the Boson gas state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04282v1-abstract-full').style.display = 'none'; document.getElementById('2310.04282v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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, 6 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/2310.04274">arXiv:2310.04274</a> <span> [<a href="https://arxiv.org/pdf/2310.04274">pdf</a>, <a href="https://arxiv.org/format/2310.04274">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> <p class="title is-5 mathjax"> Aspect of Clusters Correlation at Light Nuclei Excited State </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z">Ziming Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhu%2C+J">Jie Zhu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+T">Taofeng Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+M">Minliang Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jiansong Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yanyun Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C">Chengjian Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+Z">Zhiyu Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+Q">Qinghua He</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=Ayyad%2C+Y">Y. Ayyad</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Zhen Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F">Fangfang Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhihao Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+S">Song Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Y">Yue Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+W">Wei Jiang</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+F">F. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Lu%2C+C">Chengui Lu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J">Junbing Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">Peng Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Napolitani%2C+P">P. Napolitani</a>, <a href="/search/nucl-ex?searchtype=author&query=Verde%2C+G">G. Verde</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jianguo Wang</a> , et al. (11 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="2310.04274v1-abstract-short" style="display: inline;"> The correlation of $伪伪$ was probed via measuring the transverse momentum $p_{T}$ and width $未p_{T}$ of one $伪$, for the first time, which represents the spatial and dynamical essentialities of the initial coupling state in $^{8}$Be nucleus. The weighted interaction vertex of 3$伪$ reflected by the magnitudes of their relative momentums and relative emission angles proves the isosceles triangle conf… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04274v1-abstract-full').style.display = 'inline'; document.getElementById('2310.04274v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.04274v1-abstract-full" style="display: none;"> The correlation of $伪伪$ was probed via measuring the transverse momentum $p_{T}$ and width $未p_{T}$ of one $伪$, for the first time, which represents the spatial and dynamical essentialities of the initial coupling state in $^{8}$Be nucleus. The weighted interaction vertex of 3$伪$ reflected by the magnitudes of their relative momentums and relative emission angles proves the isosceles triangle configuration for 3$伪$ at the high excited energy analogous Hoyle states. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04274v1-abstract-full').style.display = 'none'; document.getElementById('2310.04274v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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, 9 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/2310.04261">arXiv:2310.04261</a> <span> [<a href="https://arxiv.org/pdf/2310.04261">pdf</a>, <a href="https://arxiv.org/format/2310.04261">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> <p class="title is-5 mathjax"> Variation of Tensor Force due to Nuclear Medium Effect </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z">Ziming Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhu%2C+J">Jie Zhu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+T">Taofeng Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+M">Minliang Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jiansong Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yanyun Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C">Chengjian Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+Z">Zhiyu Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+Q">Qinghua He</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=Ayyad%2C+Y">Y. Ayyad</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Zhen Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F">Fangfang Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z">Zhihao Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+S">Song Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Y">Yue Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+W">Wei Jiang</a>, <a href="/search/nucl-ex?searchtype=author&query=Kobayashi%2C+F">F. Kobayashi</a>, <a href="/search/nucl-ex?searchtype=author&query=Lu%2C+C">Chengui Lu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J">Junbing Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">Peng Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Napolitani%2C+P">P. Napolitani</a>, <a href="/search/nucl-ex?searchtype=author&query=Verde%2C+G">G. Verde</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J">Jianguo Wang</a> , et al. (11 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="2310.04261v1-abstract-short" style="display: inline;"> The enhancement of $J^蟺(T)$=3$^{+}$(0) state with isospin $T=0$ excited by the tensor force in the free $^{6}$Li nucleus has been observed, for the first time, relative to a shrinkable excitation in the $^{6}$Li cluster component inside its host nucleus. Comparatively, the excitation of $J^蟺(T)$=0$^{+}$(1) state with isospin $T=1$ for these two $^{6}$Li formations take on an approximately equal ex… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04261v1-abstract-full').style.display = 'inline'; document.getElementById('2310.04261v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.04261v1-abstract-full" style="display: none;"> The enhancement of $J^蟺(T)$=3$^{+}$(0) state with isospin $T=0$ excited by the tensor force in the free $^{6}$Li nucleus has been observed, for the first time, relative to a shrinkable excitation in the $^{6}$Li cluster component inside its host nucleus. Comparatively, the excitation of $J^蟺(T)$=0$^{+}$(1) state with isospin $T=1$ for these two $^{6}$Li formations take on an approximately equal excitation strength. The mechanism of such tensor force effect was proposed due to the intensive nuclear medium role on isospin $T$=0 state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.04261v1-abstract-full').style.display = 'none'; document.getElementById('2310.04261v1-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">6 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/2302.14382">arXiv:2302.14382</a> <span> [<a href="https://arxiv.org/pdf/2302.14382">pdf</a>, <a href="https://arxiv.org/format/2302.14382">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> <p class="title is-5 mathjax"> N=16 magicity revealed at the proton drip-line through the study of 35Ca </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lalanne%2C+L">L. Lalanne</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Poves%2C+A">A. Poves</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=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Koyama%2C+S">S. Koyama</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+D">D. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Roger%2C+T">T. Roger</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y Blumenfeld</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=Santos%2C+F+D+O">F. De Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</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=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamalou%2C+O">O. Kamalou</a>, <a href="/search/nucl-ex?searchtype=author&query=Kitamura%2C+N">N. Kitamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Lapoux%2C+V">V. Lapoux</a>, <a href="/search/nucl-ex?searchtype=author&query=Mauss%2C+B">B. Mauss</a> , et al. (5 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="2302.14382v1-abstract-short" style="display: inline;"> The last proton bound calcium isotope $^{35}$Ca has been studied for the first time, using the $^{37}$Ca($p, t$)$^{35}$Ca two neutron transfer reaction. The radioactive $^{37}$Ca nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid hydrogen target CRYPTA, to produce tritons $t$ that were detected in the MUST2 detector array, in coincidence with the heavy re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.14382v1-abstract-full').style.display = 'inline'; document.getElementById('2302.14382v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.14382v1-abstract-full" style="display: none;"> The last proton bound calcium isotope $^{35}$Ca has been studied for the first time, using the $^{37}$Ca($p, t$)$^{35}$Ca two neutron transfer reaction. The radioactive $^{37}$Ca nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid hydrogen target CRYPTA, to produce tritons $t$ that were detected in the MUST2 detector array, in coincidence with the heavy residues Ca or Ar. The atomic mass of $^{35}$Ca and the energy of its first 3/2$^+$ state are reported. A large $N=16$ gap of 4.61(11) MeV is deduced from the mass measurement, which together with other measured properties, makes $^{36}$Ca a doubly-magic nucleus. The $N = 16$ shell gaps in $^{36}$Ca and $^{24}$O are of similar amplitude, at both edges of the valley of stability. This feature is discussed in terms of nuclear forces involved, within state-of-the-art shell model calculations. Even though the global agreement with data is quite convincing, the calculations underestimate the size of the $N = 16$ gap in 36Ca by 840(110) keV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.14382v1-abstract-full').style.display = 'none'; document.getElementById('2302.14382v1-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.08382">arXiv:2302.08382</a> <span> [<a href="https://arxiv.org/pdf/2302.08382">pdf</a>, <a href="https://arxiv.org/format/2302.08382">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> <p class="title is-5 mathjax"> Cross-shell states in $^{15}$C: a test for p-sd interactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lois-Fuentes%2C+J">J. Lois-Fuentes</a>, <a href="/search/nucl-ex?searchtype=author&query=Fern%C3%A1ndez-Dom%C3%ADnguez%2C+B">B. Fern谩ndez-Dom铆nguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira-L%C3%B3pez%2C+X">X. Pereira-L贸pez</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</a>, <a href="/search/nucl-ex?searchtype=author&query=Catford%2C+W+N">W. N. Catford</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Orr%2C+N+A">N. A. Orr</a>, <a href="/search/nucl-ex?searchtype=author&query=Duguet%2C+T">T. Duguet</a>, <a href="/search/nucl-ex?searchtype=author&query=Otsuka%2C+T">T. Otsuka</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=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+T">T. Suzuki</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=Assi%C3%A9%2C+M">M. Assi茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+S">S. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Caama%C3%B1o%2C+M">M. Caama帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Caceres%2C+L">L. Caceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Curtis%2C+N">N. Curtis</a>, <a href="/search/nucl-ex?searchtype=author&query=Deshayes%2C+Q">Q. Deshayes</a>, <a href="/search/nucl-ex?searchtype=author&query=Farget%2C+F">F. Farget</a> , et al. (37 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="2302.08382v1-abstract-short" style="display: inline;"> The low-lying structure of $^{15}$C has been investigated via the neutron-removal $^{16}$C$(d,t)$ reaction. Along with bound neutron sd-shell hole states, unbound p-shell hole states have been firmly confirmed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the $[(p)^{-1}(sd)^{2}]$ neutron configurations in $^{15}$C. Our results… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.08382v1-abstract-full').style.display = 'inline'; document.getElementById('2302.08382v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.08382v1-abstract-full" style="display: none;"> The low-lying structure of $^{15}$C has been investigated via the neutron-removal $^{16}$C$(d,t)$ reaction. Along with bound neutron sd-shell hole states, unbound p-shell hole states have been firmly confirmed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the $[(p)^{-1}(sd)^{2}]$ neutron configurations in $^{15}$C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for $^{15}$C. However, a modification of the $p$-$sd$ and $sd$-$sd$ monopole terms was applied in order to reproduce the $N=9$ isotone $^{17}$O. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of $^{15}$C with the $ab~ initio$ self-consistent Green's function method employing the NNLO$_{sat}$ interaction. The results show the sensitivity to the size of the $N=8$ shell gap and highlight the need of going beyond the current truncation scheme in the theory. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.08382v1-abstract-full').style.display = 'none'; document.getElementById('2302.08382v1-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> 16 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.01513">arXiv:2201.01513</a> <span> [<a href="https://arxiv.org/pdf/2201.01513">pdf</a>, <a href="https://arxiv.org/format/2201.01513">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.129.122501">10.1103/PhysRevLett.129.122501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The structure of $^{36}$Ca under the Coulomb magnifying glass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lalanne%2C+L">L. Lalanne</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Poves%2C+A">A. Poves</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=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Koyama%2C+S">S. Koyama</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Roger%2C+T">T. Roger</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y Blumenfeld</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=Santos%2C+F+D+O">F. De Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</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=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamalou%2C+O">O. Kamalou</a>, <a href="/search/nucl-ex?searchtype=author&query=Kitamura%2C+N">N. Kitamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Lapoux%2C+V">V. Lapoux</a>, <a href="/search/nucl-ex?searchtype=author&query=Mauss%2C+B">B. Mauss</a>, <a href="/search/nucl-ex?searchtype=author&query=Morfouace%2C+P">P. Morfouace</a> , et al. (6 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="2201.01513v2-abstract-short" style="display: inline;"> Detailed spectroscopy of the neutron-deficient nucleus $^{36}$Ca was obtained up to 9 MeV using the $^{37}$Ca($p$,$d$)$^{36}$Ca and the $^{38}$Ca($p$,$t$)$^{36}$Ca transfer reactions. The radioactive nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid Hydrogen target CRYPTA, to produce light ejectiles (the deuteron $d$ or triton $t$) that were detected in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.01513v2-abstract-full').style.display = 'inline'; document.getElementById('2201.01513v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.01513v2-abstract-full" style="display: none;"> Detailed spectroscopy of the neutron-deficient nucleus $^{36}$Ca was obtained up to 9 MeV using the $^{37}$Ca($p$,$d$)$^{36}$Ca and the $^{38}$Ca($p$,$t$)$^{36}$Ca transfer reactions. The radioactive nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid Hydrogen target CRYPTA, to produce light ejectiles (the deuteron $d$ or triton $t$) that were detected in the MUST2 detector array, in coincidence with the heavy residues %identified by a zero degree detection system. %States have been measured up to 9 MeV. Our main findings are: i) a similar shift in energy for the 1$^+_1$ and 2$^+_1$ states by about -250 keV, as compared to the mirror nucleus $^{36}$S, ii) the discovery of an intruder 0$^+_2$ state at 2.83(13) MeV, which appears below the first 2$^+$ state, in contradiction with the situation in $^{36}$S, and iii) a tentative 0$^+_3$ state at 4.83(17) MeV, proposed to exhibit a bubble structure with two neutron vacancies in the 2s$_{1/2}$ orbit. The inversion between the 0$^+_2$ and 2$^+_1$ states is due to the large mirror energy difference (MED) of -516(130) keV for the former. This feature is reproduced by Shell Model (SM) calculations, using the $sd$-$pf$ valence space, predicting an almost pure intruder nature for the 0$^+_2$ state, with two protons (neutrons) being excited across the $Z$=20 magic closure in $^{36}$Ca ($^{36}$S). This mirror system has the largest MEDs ever observed, if one excludes the few cases induced by the effect of the continuum. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.01513v2-abstract-full').style.display = 'none'; document.getElementById('2201.01513v2-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 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">Paper of 5 pages, 3 figures. Contains also a supplementary material of 3 pages and 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/2111.14412">arXiv:2111.14412</a> <span> [<a href="https://arxiv.org/pdf/2111.14412">pdf</a>, <a href="https://arxiv.org/format/2111.14412">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> <p class="title is-5 mathjax"> Narrow resonances in the continuum of the unbound nucleus $^{15}$F </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Mercenne%2C+A">A. Mercenne</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Michel%2C+N">N. Michel</a>, <a href="/search/nucl-ex?searchtype=author&query=P%C5%82oszajczak%2C+M">M. P艂oszajczak</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=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Rejmund%2C+M">M. Rejmund</a>, <a href="/search/nucl-ex?searchtype=author&query=Dudouet%2C+J">J. Dudouet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackermann%2C+D">D. Ackermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Adsley%2C+P">P. Adsley</a>, <a href="/search/nucl-ex?searchtype=author&query=Assun%C3%A7%C3%A3o%2C+M">M. Assun莽茫o</a>, <a href="/search/nucl-ex?searchtype=author&query=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Benzoni%2C+G">G. Benzoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Boston%2C+A+J">A. J. Boston</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1ceres%2C+L">L. C谩ceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Cederwall%2C+B">B. Cederwall</a>, <a href="/search/nucl-ex?searchtype=author&query=Celikovic%2C+I">I. Celikovic</a> , et al. (78 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="2111.14412v1-abstract-short" style="display: inline;"> The structure of the unbound $^{15}$F nucleus is investigated using the inverse kinematics resonant scattering of a radioactive $^{14}$O beam impinging on a CH$_2$ target. The analysis of $^{1}$H($^{14}$O,p)$^{14}$O and $^{1}$H($^{14}$O,2p)$^{13}$N reactions allowed the confirmation of the previously observed narrow $1/2^{-}$ resonance, near the two-proton decay threshold, and the identification o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14412v1-abstract-full').style.display = 'inline'; document.getElementById('2111.14412v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.14412v1-abstract-full" style="display: none;"> The structure of the unbound $^{15}$F nucleus is investigated using the inverse kinematics resonant scattering of a radioactive $^{14}$O beam impinging on a CH$_2$ target. The analysis of $^{1}$H($^{14}$O,p)$^{14}$O and $^{1}$H($^{14}$O,2p)$^{13}$N reactions allowed the confirmation of the previously observed narrow $1/2^{-}$ resonance, near the two-proton decay threshold, and the identification of two new narrow 5/2$^{-}$ and 3/2$^{-}$ resonances. The newly observed levels decay by 1p emission to the ground of $^{14}$O, and by sequential 2p emission to the ground state (g.s.) of $^{13}$N via the $1^-$ resonance of $^{14}$O. Gamow shell model (GSM) analysis of the experimental data suggests that the wave functions of the 5/2$^{-}$ and 3/2$^{-}$ resonances may be collectivized by the continuum coupling to nearby 2p- and 1p- decay channels. The observed excitation function $^{1}$H($^{14}$O,p)$^{14}$O and resonance spectrum in $^{15}$F are well reproduced in the unified framework of the GSM. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14412v1-abstract-full').style.display = 'none'; document.getElementById('2111.14412v1-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 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">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/2111.02898">arXiv:2111.02898</a> <span> [<a href="https://arxiv.org/pdf/2111.02898">pdf</a>, <a href="https://arxiv.org/format/2111.02898">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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"> Pulse shape discrimination for GRIT: beam test of a new integrated charge and current preamplifier coupled with high granularity Silicon detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dormard%2C+J+-">J. -J. Dormard</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=Grassi%2C+L">L. Grassi</a>, <a href="/search/nucl-ex?searchtype=author&query=Rauly%2C+E">E. Rauly</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Brulin%2C+G">G. Brulin</a>, <a href="/search/nucl-ex?searchtype=author&query=Chabot%2C+M">M. Chabot</a>, <a href="/search/nucl-ex?searchtype=author&query=Coacolo%2C+J+-">J. -L. Coacolo</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Genolini%2C+B">B. Genolini</a>, <a href="/search/nucl-ex?searchtype=author&query=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Barkach%2C+T+I">T. Id Barkach</a>, <a href="/search/nucl-ex?searchtype=author&query=Rindel%2C+E">E. Rindel</a>, <a href="/search/nucl-ex?searchtype=author&query=Rosier%2C+P">Ph. Rosier</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Wanlin%2C+E">E. Wanlin</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="2111.02898v1-abstract-short" style="display: inline;"> The GRIT (Granularity, Resolution, Identification, Transparency) Silicon array is intended to measure direct reactions. Its design is based on several layers (three layers in the forward direction, two backward) of custom-made trapezoidal and square detectors. The first stage is 500 渭m thick and features 128x128 orthogonal strips. Pulse shape analysis for particle identification is implemented for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.02898v1-abstract-full').style.display = 'inline'; document.getElementById('2111.02898v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.02898v1-abstract-full" style="display: none;"> The GRIT (Granularity, Resolution, Identification, Transparency) Silicon array is intended to measure direct reactions. Its design is based on several layers (three layers in the forward direction, two backward) of custom-made trapezoidal and square detectors. The first stage is 500 渭m thick and features 128x128 orthogonal strips. Pulse shape analysis for particle identification is implemented for this first layer. Given the compacity of this array and the large number of channels involved (>7,500), an integrated preamplifier, iPACI, that gives charge and current information has been developed in the AMS 0.35 渭m BiCMOS technology. The design specifications and results of the test bench are presented. Considering an energy range of 50 MeV and an energy resolution (FWHM) of 12 keV (FWHM) for the preamplifier, the energy resolution for one strip obtained from alpha source measurement in real conditions is 35 keV. The current output bandwidth is measured at 130 MHz for small signals and the power consumption reaches 40 mW per detector channel. A first beam test was performed coupling a nTD trapezoidal double-sided stripped Silicon detector of GRIT with the iPACI preamplifier and a 64-channel digitizer. Z=1 particles are discriminated with pulse shape analysis technique down to 2 MeV for protons, 2.5 MeV for deuterons and 3 MeV for tritons. The effect of the strip length due to the trapezoidal shape of the detector is investigated on both the N- and the P-side, showing no significant impact. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.02898v1-abstract-full').style.display = 'none'; document.getElementById('2111.02898v1-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> 4 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.04317">arXiv:2107.04317</a> <span> [<a href="https://arxiv.org/pdf/2107.04317">pdf</a>, <a href="https://arxiv.org/format/2107.04317">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.103.055809">10.1103/PhysRevC.103.055809 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of the $^{35}$K($p$,$纬$)$^{36}$Ca reaction rate using the $^{37}$Ca($p$,$d$)$^{36}$Ca transfer reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lalanne%2C+L">L. Lalanne</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</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=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Koyama%2C+S">S. Koyama</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+D">D. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y Blumenfeld</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=Santos%2C+F+D+O">F. De Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</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=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamalou%2C+O">O. Kamalou</a>, <a href="/search/nucl-ex?searchtype=author&query=Kitamura%2C+N">N. Kitamura</a>, <a href="/search/nucl-ex?searchtype=author&query=Lapoux%2C+V">V. Lapoux</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Mauss%2C+B">B. Mauss</a>, <a href="/search/nucl-ex?searchtype=author&query=Morfouace%2C+P">P. Morfouace</a>, <a href="/search/nucl-ex?searchtype=author&query=Niikura%2C+M">M. Niikura</a> , et al. (6 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="2107.04317v1-abstract-short" style="display: inline;"> A recent sensitivity study has shown that the $^{35}$K$(p,纬)^{36}$Ca reaction is one of the ten $(p,纬)$ reaction rates that could significantly impact the shape of the calculated X-ray burst light curve. In this work, we propose to reinvestigate the $^{35}$K$(p,纬)^{36}$Ca reaction rate, as well as related uncertainties, by determining the energies and decay branching ratios of $^{36}$Ca levels, wi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.04317v1-abstract-full').style.display = 'inline'; document.getElementById('2107.04317v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.04317v1-abstract-full" style="display: none;"> A recent sensitivity study has shown that the $^{35}$K$(p,纬)^{36}$Ca reaction is one of the ten $(p,纬)$ reaction rates that could significantly impact the shape of the calculated X-ray burst light curve. In this work, we propose to reinvestigate the $^{35}$K$(p,纬)^{36}$Ca reaction rate, as well as related uncertainties, by determining the energies and decay branching ratios of $^{36}$Ca levels, within the Gamow window, in the 0.5 to 2 GK X-ray burst temperature range. These properties were studied using the one neutron pick-up transfer reaction $^{37}$Ca$(p,d)^{36}$Ca in inverse kinematics using a radioactive beam of $^{37}$Ca at 48 MeV nucleon$^{-1}$. The experiment performed at GANIL, used the liquid Hydrogen target CRYPTA, the MUST2 detector array for the detection of the light charged particles and a zero degree detection system for the outgoing heavy ions. The atomic mass of $^{36}$Ca is confirmed and new resonances have been proposed together with their proton decay branching ratios. This spectroscopic information, used in combination with recent theoretical predictions for the $纬$-width, were used to calculate the $^{35}$K$(p,纬)^{36}$Ca reaction rate. The recommended rate of the present work was obtain within a uncertainty factor of 2 at 1 sigma. This is consistent, with the previous estimate in the X-ray burst temperature range. A large increase of the reaction rate was found at higher temperatures due to two newly discovered resonances. The $^{35}$K$(p,纬)^{36}$Ca thermonuclear reaction rate is now well constrained by the present work in a broad range of temperatures. Our results show that the $^{35}$K$(p,纬)^{36}$Ca reaction does not affect the shape of the X-ray burst light curve, and that it can be removed from the list of the few influential proton radiative captures reactions having a strong impact on the light curve. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.04317v1-abstract-full').style.display = 'none'; document.getElementById('2107.04317v1-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 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">Published 13 May 2021 in PRC</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 103, 055809 , 2021 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2105.06279">arXiv:2105.06279</a> <span> [<a href="https://arxiv.org/pdf/2105.06279">pdf</a>, <a href="https://arxiv.org/format/2105.06279">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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.nima.2021.165830">10.1016/j.nima.2021.165830 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> HeCTOr: the $^3$He Cryogenic Target of Orsay for direct nuclear reactions with radioactive beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Galtarossa%2C+F">F. Galtarossa</a>, <a href="/search/nucl-ex?searchtype=author&query=Pierens%2C+M">M. Pierens</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=Delpech%2C+V">V. Delpech</a>, <a href="/search/nucl-ex?searchtype=author&query=Galet%2C+F">F. Galet</a>, <a href="/search/nucl-ex?searchtype=author&query=Saugnac%2C+H">H. Saugnac</a>, <a href="/search/nucl-ex?searchtype=author&query=Brugnara%2C+D">D. Brugnara</a>, <a href="/search/nucl-ex?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blache%2C+P">P. Blache</a>, <a href="/search/nucl-ex?searchtype=author&query=Chabot%2C+M">M. Chabot</a>, <a href="/search/nucl-ex?searchtype=author&query=Chatelet%2C+F">F. Chatelet</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Giret%2C+A">A. Giret</a>, <a href="/search/nucl-ex?searchtype=author&query=Gottardo%2C+A">A. Gottardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Goupil%2C+J">J. Goupil</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%A9nager%2C+L">L. M茅nager</a>, <a href="/search/nucl-ex?searchtype=author&query=Rindel%2C+E">E. Rindel</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="2105.06279v2-abstract-short" style="display: inline;"> Direct nuclear reactions with radioactive ion beams represent an extremely powerful tool to extend the study of fundamental nuclear properties far from stability. These measurements require pure and dense targets to cope with the low beam intensities. The $^3$He cryogenic target HeCTOr has been designed to perform direct nuclear reactions in inverse kinematics. The high density of $^3$He scatterin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.06279v2-abstract-full').style.display = 'inline'; document.getElementById('2105.06279v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2105.06279v2-abstract-full" style="display: none;"> Direct nuclear reactions with radioactive ion beams represent an extremely powerful tool to extend the study of fundamental nuclear properties far from stability. These measurements require pure and dense targets to cope with the low beam intensities. The $^3$He cryogenic target HeCTOr has been designed to perform direct nuclear reactions in inverse kinematics. The high density of $^3$He scattering centers, of the order of 10$^{20}$ atoms/cm$^2$, makes it particularly suited for experiments where low-intensity radioactive beams are involved. The target was employed in a first in-beam experiment, where it was coupled to state-of-the-art gamma-ray and particle detectors. It showed excellent stability in gas temperature and density over time. Relevant experimental quantities, such as total target thickness, energy resolution and gamma-ray absorption, were determined through dedicated Geant4 simulations and found to be in good agreement with experimental data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.06279v2-abstract-full').style.display = 'none'; document.getElementById('2105.06279v2-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 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">12 pages, 10 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/2104.10708">arXiv:2104.10708</a> <span> [<a href="https://arxiv.org/pdf/2104.10708">pdf</a>, <a href="https://arxiv.org/format/2104.10708">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.2022.137057">10.1016/j.physletb.2022.137057 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Crom%2C+B+L">B. Le Crom</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=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Sagawa%2C+H">H. Sagawa</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+T">T. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Honma%2C+M">M. Honma</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=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Catford%2C+W+N">W. N. Catford</a>, <a href="/search/nucl-ex?searchtype=author&query=Clement%2C+E">E. Clement</a>, <a href="/search/nucl-ex?searchtype=author&query=Caceres%2C+L">L. Caceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Caamano%2C+M">M. Caamano</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=De+France%2C+G">G. De France</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</a>, <a href="/search/nucl-ex?searchtype=author&query=De+S%C3%A9r%C3%A9ville%2C+N">N. De S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandez-Dominguez%2C+B">B. Fernandez-Dominguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Fisichella%2C+M">M. Fisichella</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Georgiadou%2C+A">A. Georgiadou</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=Hammache%2C+F">F. Hammache</a> , et al. (27 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="2104.10708v1-abstract-short" style="display: inline;"> The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the \textit{fp}-shell through the two-nucleon transfer reaction (p,$^3$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out thi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.10708v1-abstract-full').style.display = 'inline'; document.getElementById('2104.10708v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.10708v1-abstract-full" style="display: none;"> The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the \textit{fp}-shell through the two-nucleon transfer reaction (p,$^3$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the \textit{fp}-shell. The transfer cross-sections for ground-state to ground-state (J=0$^+$,T=1) and to the first (J=1$^+$,T=0) state were extracted for both cases together with the transfer cross-section ratios $蟽$(0$^+$,T=1) /$蟽$(1$^+$,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in $^{52}$Fe, points towards a superfluid phase in the isovector channel. For the "deuteron-like" transfer, very low cross-sections to the first (J=1$^+$,T=0) state were observed both for \Ni\phe\, and \Fe\phe\, and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.10708v1-abstract-full').style.display = 'none'; document.getElementById('2104.10708v1-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 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">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/2104.10707">arXiv:2104.10707</a> <span> [<a href="https://arxiv.org/pdf/2104.10707">pdf</a>, <a href="https://arxiv.org/format/2104.10707">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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.nima.2021.165743">10.1016/j.nima.2021.165743 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The MUGAST-AGATA-VAMOS campaign : set-up and performance </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemasson%2C+A">A. Lemasson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/nucl-ex?searchtype=author&query=Raggio%2C+A">A. Raggio</a>, <a href="/search/nucl-ex?searchtype=author&query=Zanon%2C+I">I. Zanon</a>, <a href="/search/nucl-ex?searchtype=author&query=Galtarossa%2C+F">F. Galtarossa</a>, <a href="/search/nucl-ex?searchtype=author&query=Lenain%2C+C">C. Lenain</a>, <a href="/search/nucl-ex?searchtype=author&query=Casal%2C+J">J. Casal</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Mengoni%2C+D">D. Mengoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Brugnara%2C+D">D. Brugnara</a>, <a href="/search/nucl-ex?searchtype=author&query=Catford%2C+W">W. Catford</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Oliveira%2C+F">F. de Oliveira</a>, <a href="/search/nucl-ex?searchtype=author&query=De+S%C3%A9r%C3%A9ville%2C+N">N. De S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Didierjean%2C+F">F. Didierjean</a>, <a href="/search/nucl-ex?searchtype=author&query=Diget%2C+C+A">C. Aa. Diget</a>, <a href="/search/nucl-ex?searchtype=author&query=Dudouet%2C+J">J. Dudouet</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandez-Dominguez%2C+B">B. Fernandez-Dominguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Foug%C3%A8res%2C+C">C. Foug猫res</a>, <a href="/search/nucl-ex?searchtype=author&query=Fr%C3%A9mont%2C+G">G. Fr茅mont</a> , et al. (24 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="2104.10707v1-abstract-short" style="display: inline;"> The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular 纬-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform ex… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.10707v1-abstract-full').style.display = 'inline'; document.getElementById('2104.10707v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.10707v1-abstract-full" style="display: none;"> The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular 纬-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform exclusive measurements of direct reactions with the radioactive beams from the SPIRAL1 facility. The performance of the set-up is described through its commissioning and two examples of transfer reactions measured during the campaign. High accuracy spectroscopy of the nuclei of interest, including cross-sections and angular distributions, is achieved through the triple-coincidence measurement. In addition, the correction from Doppler effect of the 纬-ray energies is improved by the detection of the light particles and the use of two-body kinematics and a full rejection of the background contributions is obtained through the identification of heavy residues. Moreover, the system can handle high intensity beams (up to 108 pps). The particle identification based on the measurement of the time-of-flight between MUGAST and VAMOS and the reconstruction of the trajectories is investigated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.10707v1-abstract-full').style.display = 'none'; document.getElementById('2104.10707v1-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 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">13 pages, 18 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research, A 1014 (2021) 165743 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.02132">arXiv:2101.02132</a> <span> [<a href="https://arxiv.org/pdf/2101.02132">pdf</a>, <a href="https://arxiv.org/format/2101.02132">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/10.1140/epja/s10050-021-00410-1">10.1140/epja/s10050-021-00410-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing nuclear forces beyond the nuclear drip line: The cases of $^{16}$F and $^{15}$F </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Girard-Alcindor%2C+V">V. Girard-Alcindor</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Ackermann%2C+D">D. Ackermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Adsley%2C+P">P. Adsley</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelique%2C+J+C">J. C. Angelique</a>, <a href="/search/nucl-ex?searchtype=author&query=Assie%2C+M">M. Assie</a>, <a href="/search/nucl-ex?searchtype=author&query=Assuncao%2C+M">M. Assuncao</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Berthoumieux%2C+E">E. Berthoumieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Caceres%2C+L">L. Caceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Celikovic%2C+I">I. Celikovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemala%2C+M">M. Ciemala</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</a>, <a href="/search/nucl-ex?searchtype=author&query=Agata%2C+G+D">G. D Agata</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Grancey%2C+F">F. de Grancey</a>, <a href="/search/nucl-ex?searchtype=author&query=Dumitru%2C+G">G. Dumitru</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Fougeres%2C+C">C. Fougeres</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Georgiadou%2C+A">A. Georgiadou</a>, <a href="/search/nucl-ex?searchtype=author&query=Grevy%2C+S">S. Grevy</a>, <a href="/search/nucl-ex?searchtype=author&query=Guillot%2C+J">J. Guillot</a> , et al. (31 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="2101.02132v1-abstract-short" style="display: inline;"> The unbound proton-rich nuclei $^{16}$F and $^{15}$F are investigated experimentally and theoretically. Several experiments using the resonant elastic scattering method were performed at GANIL with radioactive beams to determine the properties of the low lying states of these nuclei. Strong asymmetry between $^{16}$F-$^{16}$N and $^{15}$F-$^{15}$C mirror nuclei is observed. The strength of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.02132v1-abstract-full').style.display = 'inline'; document.getElementById('2101.02132v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.02132v1-abstract-full" style="display: none;"> The unbound proton-rich nuclei $^{16}$F and $^{15}$F are investigated experimentally and theoretically. Several experiments using the resonant elastic scattering method were performed at GANIL with radioactive beams to determine the properties of the low lying states of these nuclei. Strong asymmetry between $^{16}$F-$^{16}$N and $^{15}$F-$^{15}$C mirror nuclei is observed. The strength of the $nucleon-nucleon$ effective interaction involving the loosely bound proton in the $s_{1/2}$ orbit is significantly modified with respect to their mirror nuclei $^{16}$N and $^{15}$C. The reduction of the effective interaction is estimated by calculating the interaction energies with a schematic zero-range force. It is found that, after correcting for the effects due to changes in the radial distribution of the single-particle wave functions, the mirror symmetry of the $n-p$ interaction is preserved between $^{16}$F and $^{16}$N, while a difference of 63\% is measured between the $p-p$ versus $n-n$ interactions in the second excited state of $^{15}$F and $^{15}$C nuclei. Several explanations are proposed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.02132v1-abstract-full').style.display = 'none'; document.getElementById('2101.02132v1-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 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">Journal ref:</span> Eur. Phys. J. A 57, 93 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.13222">arXiv:2011.13222</a> <span> [<a href="https://arxiv.org/pdf/2011.13222">pdf</a>, <a href="https://arxiv.org/format/2011.13222">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="Solar and Stellar Astrophysics">astro-ph.SR</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.103.015807">10.1103/PhysRevC.103.015807 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sub-threshold states in $^{19}$Ne relevant to $^{18}$F(p,$伪$)$^{15}$O </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Riley%2C+J+E">J. E. Riley</a>, <a href="/search/nucl-ex?searchtype=author&query=Laird%2C+A+M">A. M. Laird</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Parikh%2C+A">A. Parikh</a>, <a href="/search/nucl-ex?searchtype=author&query=Fox%2C+S+P">S. P. Fox</a>, <a href="/search/nucl-ex?searchtype=author&query=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Adsley%2C+P">P. Adsley</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=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Boulay%2C+F">F. Boulay</a>, <a href="/search/nucl-ex?searchtype=author&query=Coc%2C+A">A. Coc</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Garg%2C+R">R. Garg</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillespie%2C+S+A">S. A. Gillespie</a>, <a href="/search/nucl-ex?searchtype=author&query=Guimaraes%2C+V">V. Guimaraes</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamadache%2C+C">C. Hamadache</a>, <a href="/search/nucl-ex?searchtype=author&query=Hubbard%2C+N">N. Hubbard</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre-Schuhl%2C+A">A. Lefebvre-Schuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Remadi%2C+A">A. Remadi</a>, <a href="/search/nucl-ex?searchtype=author&query=Perrot%2C+L">L. Perrot</a>, <a href="/search/nucl-ex?searchtype=author&query=Suzuki%2C+D">D. Suzuki</a>, <a href="/search/nucl-ex?searchtype=author&query=Verde%2C+G">G. Verde</a> , et al. (2 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="2011.13222v1-abstract-short" style="display: inline;"> Classical novae result from thermonuclear explosions producing several $纬$-ray emitters which are prime targets for satellites observing in the MeV range. The early 511 keV gamma-ray emission depends critically on the $^{18}$F(p,$伪$)$^{15}$O reaction rate which, despite many experimental and theoretical efforts, still remains uncertain. One of the main uncertainties in the $^{18}$F(p,$伪$)$^{15}$O… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.13222v1-abstract-full').style.display = 'inline'; document.getElementById('2011.13222v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.13222v1-abstract-full" style="display: none;"> Classical novae result from thermonuclear explosions producing several $纬$-ray emitters which are prime targets for satellites observing in the MeV range. The early 511 keV gamma-ray emission depends critically on the $^{18}$F(p,$伪$)$^{15}$O reaction rate which, despite many experimental and theoretical efforts, still remains uncertain. One of the main uncertainties in the $^{18}$F(p,$伪$)$^{15}$O reaction rate is the contribution in the Gamow window of interference between sub-threshold $^{19}$Ne states and known broad states at higher energies. Therefore the goal of this work is to clarify the existence and the nature of these sub-threshold states. States in the $^{19}$Ne compound nucleus were studied at the Tandem-ALTO facility using the $^{19}$F($^3$He,t)$^{19}$Ne charge exchange reaction. Tritons were detected with an Enge Split-pole spectrometer while decaying protons or $伪$-particles from unbound $^{19}$Ne states were collected, in coincidence, with a double-sided silicon strip detector array. Angular correlations were extracted and constraints on the spin and parity of decaying states established. The coincidence yield at $E_x$ = 6.29 MeV was observed to be high spin, supporting the conclusion that it is indeed a doublet consisting of high spin and low spin components. Evidence for a broad, low spin state was observed around 6 MeV. Branching ratios were extracted for several states above the proton threshold and were found to be consistent with the literature. R-matrix calculations show the relative contribution of sub-threshold states to the astrophysically important energy region above the proton threshold. The levels schemes of $^{19}$Ne and $^{19}$F are still not sufficiently well known and further studies of the analogue assignments are needed. The tentative broad state at 6 MeV may only play a role if the reduced proton width is large. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.13222v1-abstract-full').style.display = 'none'; document.getElementById('2011.13222v1-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 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.06101">arXiv:2011.06101</a> <span> [<a href="https://arxiv.org/pdf/2011.06101">pdf</a>, <a href="https://arxiv.org/ps/2011.06101">ps</a>, <a href="https://arxiv.org/format/2011.06101">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.2020.135939">10.1016/j.physletb.2020.135939 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Low-lying single-particle structure of 17C and the N = 14 sub-shell closure </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Pereira-L%C3%B3pez%2C+X">X. Pereira-L贸pez</a>, <a href="/search/nucl-ex?searchtype=author&query=Fern%C3%A1ndez-Dom%C3%ADnguez%2C+B">B. Fern谩ndez-Dom铆nguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</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=Orr%2C+N+A">N. A. Orr</a>, <a href="/search/nucl-ex?searchtype=author&query=Catford%2C+W+N">W. N. Catford</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=Bailey%2C+S">S. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Caama%C3%B1o%2C+M">M. Caama帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Caceres%2C+L">L. Caceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+E">E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Corsi%2C+A">A. Corsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Curtis%2C+N">N. Curtis</a>, <a href="/search/nucl-ex?searchtype=author&query=Deshayes%2C+Q">Q. Deshayes</a>, <a href="/search/nucl-ex?searchtype=author&query=Farget%2C+F">F. Farget</a>, <a href="/search/nucl-ex?searchtype=author&query=Fisichella%2C+M">M. Fisichella</a>, <a href="/search/nucl-ex?searchtype=author&query=de+France%2C+G">G. de France</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Freer%2C+M">M. Freer</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=Grinyer%2C+G+F">G. F. Grinyer</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="2011.06101v1-abstract-short" style="display: inline;"> The first investigation of the single-particle structure of the bound states of 17C, via the d(16C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreem… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06101v1-abstract-full').style.display = 'inline'; document.getElementById('2011.06101v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.06101v1-abstract-full" style="display: none;"> The first investigation of the single-particle structure of the bound states of 17C, via the d(16C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N = 14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the 谓1d3/2 strength is carried by unbound states. With a dominant l = 0 valence neutron configuration and a very low separation energy, the 1/2+ excited state is a one-neutron halo candidate. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06101v1-abstract-full').style.display = 'none'; document.getElementById('2011.06101v1-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 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">7 pages, 5 figures, Accepted for publication in Physics Letters 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/1907.05471">arXiv:1907.05471</a> <span> [<a href="https://arxiv.org/pdf/1907.05471">pdf</a>, <a href="https://arxiv.org/format/1907.05471">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.100.034320">10.1103/PhysRevC.100.034320 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental investigation of $伪$-condensation in light nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bishop%2C+J">Jack Bishop</a>, <a href="/search/nucl-ex?searchtype=author&query=Kokalova%2C+T">Tzany Kokalova</a>, <a href="/search/nucl-ex?searchtype=author&query=Freer%2C+M">Martin Freer</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Assie%2C+M">M Assie</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+S">S Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardella%2C+G">G Cardella</a>, <a href="/search/nucl-ex?searchtype=author&query=Curtis%2C+N">N Curtis</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Filippo%2C+E">E De Filippo</a>, <a href="/search/nucl-ex?searchtype=author&query=Dell%27Aquila%2C+D">D Dell'Aquila</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Luca%2C+S">S De Luca</a>, <a href="/search/nucl-ex?searchtype=author&query=Francalanza%2C+L">L Francalanza</a>, <a href="/search/nucl-ex?searchtype=author&query=Gnoffo%2C+B">B Gnoffo</a>, <a href="/search/nucl-ex?searchtype=author&query=Lanzalone%2C+G">G Lanzalone</a>, <a href="/search/nucl-ex?searchtype=author&query=Lombardo%2C+I">I Lombardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Martorana%2C+N+S">N. S. Martorana</a>, <a href="/search/nucl-ex?searchtype=author&query=Norella%2C+S">S Norella</a>, <a href="/search/nucl-ex?searchtype=author&query=Pagano%2C+A">A Pagano</a>, <a href="/search/nucl-ex?searchtype=author&query=Pagano%2C+E+V">E. V. Pagano</a>, <a href="/search/nucl-ex?searchtype=author&query=Papa%2C+M">M. Papa</a>, <a href="/search/nucl-ex?searchtype=author&query=Pirrone%2C+S">S. Pirrone</a>, <a href="/search/nucl-ex?searchtype=author&query=Politi%2C+G">G Politi</a>, <a href="/search/nucl-ex?searchtype=author&query=Rizzo%2C+F">F Rizzo</a>, <a href="/search/nucl-ex?searchtype=author&query=Russotto%2C+P">P Russotto</a>, <a href="/search/nucl-ex?searchtype=author&query=Quattrocchi%2C+L">L Quattrocchi</a> , et al. (7 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="1907.05471v2-abstract-short" style="display: inline;"> Method: To examine signatures of this alpha-condensation, a compound nucleus reaction using 160, 280, and 400 MeV 16O beams impinging on a carbon target was used to investigate the 12C(16O,7a) reaction. This permits a search for near-threshold states in the alpha-conjugate nuclei up to 24Mg. Results: Events up to an alpha-particle multiplicity of 7 were measured and the results were compared to bo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.05471v2-abstract-full').style.display = 'inline'; document.getElementById('1907.05471v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.05471v2-abstract-full" style="display: none;"> Method: To examine signatures of this alpha-condensation, a compound nucleus reaction using 160, 280, and 400 MeV 16O beams impinging on a carbon target was used to investigate the 12C(16O,7a) reaction. This permits a search for near-threshold states in the alpha-conjugate nuclei up to 24Mg. Results: Events up to an alpha-particle multiplicity of 7 were measured and the results were compared to both an Extended Hauser-Feshbach calculation and the Fermi break-up model. The measured multiplicity distribution exceeded that predicted from a sequential decay mechanism and had a better agreement with the multi-particle Fermi break-up model. Examination of how these 7 alpha final states could be reconstructed to form 8Be and 12C(0_2+) showed a quantitative difference in which decay modes were dominant compared to the Fermi break-up model. No new states were observed in 16O, 20Ne, and 24Mg due to the effect of the N-alpha penetrability suppressing the total alpha-particle dissociation decay mode. Conclusion: The reaction mechanism for a high energy compound nucleus reaction can only be described by a hybrid of sequential decay and multi-particle breakup. Highly alpha-clustered states were seen which did not originate from simple binary reaction processes. Direct investigations of near-threshold states in N-alpha systems are inherently impeded by the Coulomb barrier prohibiting the observation of states in the N-alpha decay channel. No evidence of a highly clustered 15.1 MeV state in 16O was observed from (28Si*,12C(0_2+))16O(0_6+) when reconstructing the Hoyle state from 3 alpha-particles. Therefore, no experimental signatures for alpha-condensation were observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.05471v2-abstract-full').style.display = 'none'; document.getElementById('1907.05471v2-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 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 100, 034320 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.04699">arXiv:1906.04699</a> <span> [<a href="https://arxiv.org/pdf/1906.04699">pdf</a>, <a href="https://arxiv.org/ps/1906.04699">ps</a>, <a href="https://arxiv.org/format/1906.04699">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/10.1393/ncc/i2019-19098-5">10.1393/ncc/i2019-19098-5 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of multi-neutron emission in the $尾$-decay of $^{11}$Li </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Delaunay%2C+F">F. Delaunay</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=Algora%2C+A">A. Algora</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=Balibrea%2C+J">J. Balibrea</a>, <a href="/search/nucl-ex?searchtype=author&query=Banerjee%2C+K">K. Banerjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattacharya%2C+C">C. Bhattacharya</a>, <a href="/search/nucl-ex?searchtype=author&query=Borge%2C+M+J+G">M. J. G. Borge</a>, <a href="/search/nucl-ex?searchtype=author&query=Cano-Ott%2C+D">D. Cano-Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Fern%C3%A1ndez-Dom%C3%ADnguez%2C+B">B. Fern谩ndez-Dom铆nguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Fraile%2C+L+M">L. M. Fraile</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibelin%2C+J">J. Gibelin</a>, <a href="/search/nucl-ex?searchtype=author&query=Lund%2C+M+V">M. V. Lund</a>, <a href="/search/nucl-ex?searchtype=author&query=Madurga%2C+M">M. Madurga</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=Marroquin%2C+I">I. Marroquin</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez%2C+T">T. Mart铆nez</a>, <a href="/search/nucl-ex?searchtype=author&query=Mendoza%2C+E">E. Mendoza</a>, <a href="/search/nucl-ex?searchtype=author&query=Orr%2C+N+A">N. A. Orr</a>, <a href="/search/nucl-ex?searchtype=author&query=P%C3%A2rlog%2C+M">M. P芒rlog</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira-L%C3%B3pez%2C+X">X. Pereira-L贸pez</a>, <a href="/search/nucl-ex?searchtype=author&query=Pestel%2C+V">V. Pestel</a>, <a href="/search/nucl-ex?searchtype=author&query=Riisager%2C+K">K. Riisager</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+C">C. Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=S%C3%A9noville%2C+M">M. S茅noville</a> , et al. (2 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="1906.04699v1-abstract-short" style="display: inline;"> The kinematics of two-neutron emission following the $尾$-decay of $^{11}$Li was investigated for the first time by detecting the two neutrons in coincidence and by measuring their angle and energy. An array of liquid-scintillator neutron detectors was used to reject cosmic-ray and $纬$-ray backgrounds by pulse-shape discrimination. Cross-talk events in which two detectors are fired by a single neut… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.04699v1-abstract-full').style.display = 'inline'; document.getElementById('1906.04699v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.04699v1-abstract-full" style="display: none;"> The kinematics of two-neutron emission following the $尾$-decay of $^{11}$Li was investigated for the first time by detecting the two neutrons in coincidence and by measuring their angle and energy. An array of liquid-scintillator neutron detectors was used to reject cosmic-ray and $纬$-ray backgrounds by pulse-shape discrimination. Cross-talk events in which two detectors are fired by a single neutron were rejected using a filter tested on the $尾$-1n emitter $^9$Li. A large cross-talk rejection rate is obtained ($> 95 \%$) over most of the energy range of interest. Application to $^{11}$Li data leads to a significant number of events interpreted as $尾$-2n decay. A discrete neutron line at $\approx$ 2 MeV indicates sequential two-neutron emission, possibly from the unbound state at 10.6 MeV excitation energy in $^{11}$Be. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.04699v1-abstract-full').style.display = 'none'; document.getElementById('1906.04699v1-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 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">4 pages, Proceedings of the EuNPC2018 Conference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.01339">arXiv:1905.01339</a> <span> [<a href="https://arxiv.org/pdf/1905.01339">pdf</a>, <a href="https://arxiv.org/format/1905.01339">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"> The Giant Pairing Vibration in Heavy Nuclei: Present Status and Future Studies </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=Dasso%2C+C+H">C. H. Dasso</a>, <a href="/search/nucl-ex?searchtype=author&query=Liotta%2C+R+J">R. J. Liotta</a>, <a href="/search/nucl-ex?searchtype=author&query=Macchiavelli%2C+A+O">A. O. Macchiavelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Vitturi%2C+A">A. Vitturi</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="1905.01339v1-abstract-short" style="display: inline;"> The Giant Pairing Vibration, a two-nucleon collective mode originating from the second shell above the Fermi surface, has long been predicted and expected to be strongly populated in two-nucleon transfer reactions with cross sections similar to those of the normal Pairing Vibration. Recent experiments have provided evidence for this mode in $^{14,15}$C but, despite sensitive studies, it has not be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.01339v1-abstract-full').style.display = 'inline'; document.getElementById('1905.01339v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.01339v1-abstract-full" style="display: none;"> The Giant Pairing Vibration, a two-nucleon collective mode originating from the second shell above the Fermi surface, has long been predicted and expected to be strongly populated in two-nucleon transfer reactions with cross sections similar to those of the normal Pairing Vibration. Recent experiments have provided evidence for this mode in $^{14,15}$C but, despite sensitive studies, it has not been definitively identified either in Sn or Pb nuclei where pairing correlations are known to play a crucial role near their ground states. In this paper we review the basic theoretical concepts of this "elusive" state and the status of experimental searches in heavy nuclei. We discuss the hindrance effects due to Q-value mismatch and the use of weakly-bound projectiles as a way to overcome the limitations of the (p,t) and (t,p) reactions. We also discuss the role of the continuum and conclude with some possible future developments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.01339v1-abstract-full').style.display = 'none'; document.getElementById('1905.01339v1-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 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">Contribution to the special issue of EPJA on the topic "Giant, Pygmy, Pairing Resonances and related topics" dedicated to honor the memory of Pier Francesco Bortignon</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.04357">arXiv:1809.04357</a> <span> [<a href="https://arxiv.org/pdf/1809.04357">pdf</a>, <a href="https://arxiv.org/format/1809.04357">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/10.1007/978-3-030-13876-9_45">10.1007/978-3-030-13876-9_45 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Charged-particle decays of highly excited states in $^{19}$F </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adsley%2C+P">P. Adsley</a>, <a href="/search/nucl-ex?searchtype=author&query=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</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=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Chabot%2C+M">M. Chabot</a>, <a href="/search/nucl-ex?searchtype=author&query=Degerlier%2C+M">M. Degerlier</a>, <a href="/search/nucl-ex?searchtype=author&query=Delafosse%2C+C">C. Delafosse</a>, <a href="/search/nucl-ex?searchtype=author&query=Flavigny%2C+F">F. Flavigny</a>, <a href="/search/nucl-ex?searchtype=author&query=Georgiadou%2C+A">A. Georgiadou</a>, <a href="/search/nucl-ex?searchtype=author&query=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Guimar%C3%A3es%2C+V">V. Guimar茫es</a>, <a href="/search/nucl-ex?searchtype=author&query=Gottardo%2C+A">A. Gottardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Matea%2C+I">I. Matea</a>, <a href="/search/nucl-ex?searchtype=author&query=Olivier%2C+L">L. Olivier</a>, <a href="/search/nucl-ex?searchtype=author&query=Perrot%2C+L">L. Perrot</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Laird%2C+A">A. Laird</a>, <a href="/search/nucl-ex?searchtype=author&query=Fox%2C+S+P">S. P. Fox</a>, <a href="/search/nucl-ex?searchtype=author&query=Garg%2C+R">R. Garg</a>, <a href="/search/nucl-ex?searchtype=author&query=Gillespie%2C+S">S. Gillespie</a>, <a href="/search/nucl-ex?searchtype=author&query=Riley%2C+J">J. Riley</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre-Schuhl%2C+A">A. Lefebvre-Schuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Tatischeff%2C+V">V. Tatischeff</a> , et al. (1 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="1809.04357v1-abstract-short" style="display: inline;"> Neutron-capture reactions on $^{18}$F in the helium-burning shell play an important role in the production of $^{15}$N during core-collapse supernovae. The competition between the $^{18}$F($n,p/伪$)$^{18}$O/$^{15}$N reactions controls the amount of $^{15}$N produced. The strengths of these reactions depend on the decay branching ratios of states in $^{19}$F above the neutron threshold. We report on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04357v1-abstract-full').style.display = 'inline'; document.getElementById('1809.04357v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.04357v1-abstract-full" style="display: none;"> Neutron-capture reactions on $^{18}$F in the helium-burning shell play an important role in the production of $^{15}$N during core-collapse supernovae. The competition between the $^{18}$F($n,p/伪$)$^{18}$O/$^{15}$N reactions controls the amount of $^{15}$N produced. The strengths of these reactions depend on the decay branching ratios of states in $^{19}$F above the neutron threshold. We report on an experiment investigating the decay branching ratios of these states in order to better constrain the strengths of the reactions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04357v1-abstract-full').style.display = 'none'; document.getElementById('1809.04357v1-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 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">Submitted as part of the Proceedings of NIC 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.00436">arXiv:1603.00436</a> <span> [<a href="https://arxiv.org/pdf/1603.00436">pdf</a>, <a href="https://arxiv.org/ps/1603.00436">ps</a>, <a href="https://arxiv.org/format/1603.00436">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.2016.04.051">10.1016/j.physletb.2016.04.051 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An above-barrier narrow resonance in $^{15}$F </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=De+Grancey%2C+F">F. De Grancey</a>, <a href="/search/nucl-ex?searchtype=author&query=Mercenne%2C+A">A. Mercenne</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Davinson%2C+T">T. Davinson</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Ang%C3%A9lique%2C+J+C">J. C. Ang茅lique</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=Berthoumieux%2C+E">E. Berthoumieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Buta%2C+A">A. Buta</a>, <a href="/search/nucl-ex?searchtype=author&query=Celikovic%2C+I">I. Celikovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugas%2C+J+M">J. M. Daugas</a>, <a href="/search/nucl-ex?searchtype=author&query=Dumitru%2C+G">G. Dumitru</a>, <a href="/search/nucl-ex?searchtype=author&query=Fadil%2C+M">M. Fadil</a>, <a href="/search/nucl-ex?searchtype=author&query=Gr%C3%A9vy%2C+S">S. Gr茅vy</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre-Schuhl%2C+A">A. Lefebvre-Schuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Michel%2C+N">N. Michel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mrazek%2C+J">J. Mrazek</a>, <a href="/search/nucl-ex?searchtype=author&query=Negoita%2C+F">F. Negoita</a>, <a href="/search/nucl-ex?searchtype=author&query=Okolowicz%2C+J">J. Okolowicz</a>, <a href="/search/nucl-ex?searchtype=author&query=Pantelica%2C+D">D. Pantelica</a>, <a href="/search/nucl-ex?searchtype=author&query=Pellegriti%2C+M+G">M. G. Pellegriti</a>, <a href="/search/nucl-ex?searchtype=author&query=Perrot%2C+L">L. Perrot</a> , et al. (15 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="1603.00436v1-abstract-short" style="display: inline;"> Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance at E$\_R$=4.757(6)(10)~MeV with a width of $螕$=36(5)(14)~keV was measured for the first time with high precision. The structure of this narro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.00436v1-abstract-full').style.display = 'inline'; document.getElementById('1603.00436v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.00436v1-abstract-full" style="display: none;"> Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance at E$\_R$=4.757(6)(10)~MeV with a width of $螕$=36(5)(14)~keV was measured for the first time with high precision. The structure of this narrow above-barrier state in a nucleus located two neutrons beyond the proton drip line was investigated using the Gamow Shell Model in the coupled channel representation with a $^{12}$C core and three valence protons. It is found that it is an almost pure wave function of two quasi-bound protons in the $2s\_{1/2}$ shell. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.00436v1-abstract-full').style.display = 'none'; document.getElementById('1603.00436v1-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, 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">8 pages, 2 figures, 1 table, Submitted to Phys. Lett. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> GANIL P 2016-02 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.0894">arXiv:1312.0894</a> <span> [<a href="https://arxiv.org/pdf/1312.0894">pdf</a>, <a href="https://arxiv.org/ps/1312.0894">ps</a>, <a href="https://arxiv.org/format/1312.0894">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="Cosmology and Nongalactic Astrophysics">astro-ph.CO</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.88.062802">10.1103/PhysRevC.88.062802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for new resonant states in 10C and 11C and their impact on the cosmological lithium problem </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Hammache%2C+F">F. Hammache</a>, <a href="/search/nucl-ex?searchtype=author&query=Coc%2C+A">A. Coc</a>, <a href="/search/nucl-ex?searchtype=author&query=de+S%C3%A9r%C3%A9ville%2C+N">N. de S茅r茅ville</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Roussel%2C+P">P. Roussel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ancelin%2C+S">S. Ancelin</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=Audouin%2C+L">L. Audouin</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandez-Dominguez%2C+B">B. Fernandez-Dominguez</a>, <a href="/search/nucl-ex?searchtype=author&query=Fox%2C+S">S. Fox</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamadache%2C+C">C. Hamadache</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Laird%2C+A">A. Laird</a>, <a href="/search/nucl-ex?searchtype=author&query=Crom%2C+B+L">B. Le Crom</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre-Schuhl%2C+A">A. Lefebvre-Schuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre%2C+L">L. Lefebvre</a>, <a href="/search/nucl-ex?searchtype=author&query=Matea%2C+I">I. Matea</a>, <a href="/search/nucl-ex?searchtype=author&query=Matta%2C+A">A. Matta</a>, <a href="/search/nucl-ex?searchtype=author&query=Mavilla%2C+G">G. Mavilla</a>, <a href="/search/nucl-ex?searchtype=author&query=Mrazek%2C+J">J. Mrazek</a>, <a href="/search/nucl-ex?searchtype=author&query=Morfouace%2C+P">P. Morfouace</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Parikh%2C+A">A. Parikh</a> , et al. (6 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="1312.0894v1-abstract-short" style="display: inline;"> The observed primordial 7Li abundance in metal-poor halo stars is found to be lower than its Big-Bang nucleosynthesis (BBN) calculated value by a factor of approximately three. Some recent works suggested the possibility that this discrepancy originates from missing resonant reactions which would destroy the 7Be, parent of 7Li. The most promising candidate resonances which were found include a pos… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0894v1-abstract-full').style.display = 'inline'; document.getElementById('1312.0894v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.0894v1-abstract-full" style="display: none;"> The observed primordial 7Li abundance in metal-poor halo stars is found to be lower than its Big-Bang nucleosynthesis (BBN) calculated value by a factor of approximately three. Some recent works suggested the possibility that this discrepancy originates from missing resonant reactions which would destroy the 7Be, parent of 7Li. The most promising candidate resonances which were found include a possibly missed 1- or 2- narrow state around 15 MeV in the compound nucleus 10C formed by 7Be+3He and a state close to 7.8 MeV in the compound nucleus 11C formed by 7Be+4He. In this work, we studied the high excitation energy region of 10C and the low excitation energy region in 11C via the reactions 10B(3He,t)10C and 11B(3He,t)11C, respectively, at the incident energy of 35 MeV. Our results for 10C do not support 7Be+3He as a possible solution for the 7Li problem. Concerning 11C results, the data show no new resonances in the excitation energy region of interest and this excludes 7Be+4He reaction channel as an explanation for the 7Li deficit. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0894v1-abstract-full').style.display = 'none'; document.getElementById('1312.0894v1-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 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2013. </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 Phys. Rev. C (Rapid Communication)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1212.3579">arXiv:1212.3579</a> <span> [<a href="https://arxiv.org/pdf/1212.3579">pdf</a>, <a href="https://arxiv.org/ps/1212.3579">ps</a>, <a href="https://arxiv.org/format/1212.3579">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.110.032501">10.1103/PhysRevLett.110.032501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Superscreening effect in Superconductor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ujic%2C+P">P. Ujic</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Lewitowicz%2C+M">M. Lewitowicz</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+L">L. Achouri</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=Bastin%2C+B">B. Bastin</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+C">C. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Buta%2C+A">A. Buta</a>, <a href="/search/nucl-ex?searchtype=author&query=Coc%2C+A">A. Coc</a>, <a href="/search/nucl-ex?searchtype=author&query=De+France%2C+G">G. De France</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamalou%2C+O">O. Kamalou</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Lepailleur%2C+A">A. Lepailleur</a>, <a href="/search/nucl-ex?searchtype=author&query=Meot%2C+V">V. Meot</a>, <a href="/search/nucl-ex?searchtype=author&query=Pautrat%2C+A">A. Pautrat</a>, <a href="/search/nucl-ex?searchtype=author&query=Laurent%2C+M+G+S">M. G. Saint Laurent</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorlin%2C+O">O. Sorlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Stanoiu%2C+M">M. Stanoiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Tatischef%2C+V">V. Tatischef</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="1212.3579v1-abstract-short" style="display: inline;"> The decay of $^{19}$O($尾^-$) and $^{19}$Ne($尾^+$) implanted in niobium in its superconducting and metallic phase was measured using purified radioactive beams produced by the SPIRAL/GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within one-sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in superconductor, t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.3579v1-abstract-full').style.display = 'inline'; document.getElementById('1212.3579v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1212.3579v1-abstract-full" style="display: none;"> The decay of $^{19}$O($尾^-$) and $^{19}$Ne($尾^+$) implanted in niobium in its superconducting and metallic phase was measured using purified radioactive beams produced by the SPIRAL/GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within one-sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for $^{19}$Ne and 400(320) eV for $^{19}$O. Precise determinations of the half-lives were obtained for $^{19}$O: 26.476(9) s and $^{19}$Ne: 17.254(5) s. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.3579v1-abstract-full').style.display = 'none'; document.getElementById('1212.3579v1-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> 14 December, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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, accepted for publication in Physical Review Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> GANIL P 2012-012 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 110 (2013) 032501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.1236">arXiv:1110.1236</a> <span> [<a href="https://arxiv.org/pdf/1110.1236">pdf</a>, <a href="https://arxiv.org/ps/1110.1236">ps</a>, <a href="https://arxiv.org/format/1110.1236">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.2012.04.059">10.1016/j.physletb.2012.04.059 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg </p> <p class="authors"> <span class="search-hit">Authors:</span> <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=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Davinson%2C+T">T. Davinson</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Grancey%2C+F">F. de Grancey</a>, <a href="/search/nucl-ex?searchtype=author&query=Achouri%2C+L">L. Achouri</a>, <a href="/search/nucl-ex?searchtype=author&query=Alc%C3%A1ntara-N%C3%BA%C3%B1ez%2C+J">J. Alc谩ntara-N煤帽ez</a>, <a href="/search/nucl-ex?searchtype=author&query=Kalanee%2C+T+A">T. Al Kalanee</a>, <a href="/search/nucl-ex?searchtype=author&query=Ang%C3%A9lique%2C+J+-">J. -C. Ang茅lique</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+C">C. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+R">R. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Caceres%2C+L">L. Caceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Celikovic%2C+I">I. Celikovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</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=Ducoin%2C+C">C. Ducoin</a>, <a href="/search/nucl-ex?searchtype=author&query=Fallot%2C+M">M. Fallot</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamalou%2C+O">O. Kamalou</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiener%2C+J">J. Kiener</a>, <a href="/search/nucl-ex?searchtype=author&query=Lam%2C+Y">Y. Lam</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre-Schuhl%2C+A">A. Lefebvre-Schuhl</a>, <a href="/search/nucl-ex?searchtype=author&query=Lotay%2C+G">G. Lotay</a>, <a href="/search/nucl-ex?searchtype=author&query=Mrazek%2C+J">J. Mrazek</a>, <a href="/search/nucl-ex?searchtype=author&query=Perrot%2C+L">L. Perrot</a>, <a href="/search/nucl-ex?searchtype=author&query=S%C3%A1nchez-Ben%C3%ADtez%2C+A+M">A. M. S谩nchez-Ben铆tez</a>, <a href="/search/nucl-ex?searchtype=author&query=Rotaru%2C+F">F. Rotaru</a> , et al. (9 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="1110.1236v1-abstract-short" style="display: inline;"> The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of the low-lying states were obtained in a R-matrix analysis of the excitation function. Using these new results, we show that the lifetime of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.1236v1-abstract-full').style.display = 'inline'; document.getElementById('1110.1236v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.1236v1-abstract-full" style="display: none;"> The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of the low-lying states were obtained in a R-matrix analysis of the excitation function. Using these new results, we show that the lifetime of the $^{19}$Mg radioactivity can be understood assuming a sequential emission of two protons via low energy tails of $^{18}$Na resonances. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.1236v1-abstract-full').style.display = 'none'; document.getElementById('1110.1236v1-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 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1105.4072">arXiv:1105.4072</a> <span> [<a href="https://arxiv.org/pdf/1105.4072">pdf</a>, <a href="https://arxiv.org/ps/1105.4072">ps</a>, <a href="https://arxiv.org/format/1105.4072">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.85.054321">10.1103/PhysRevC.85.054321 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First direct lifetime measurement of the 2+1 state in 72,74Zn: new evidence for shape transition between N = 40 and N = 42 close to Z = 28 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Niikura%2C+M">M. Niikura</a>, <a href="/search/nucl-ex?searchtype=author&query=Mouginot%2C+B">B. Mouginot</a>, <a href="/search/nucl-ex?searchtype=author&query=Franchoo%2C+S">S. Franchoo</a>, <a href="/search/nucl-ex?searchtype=author&query=Matea%2C+I">I. Matea</a>, <a href="/search/nucl-ex?searchtype=author&query=Stefan%2C+I">I. Stefan</a>, <a href="/search/nucl-ex?searchtype=author&query=Verney%2C+D">D. Verney</a>, <a href="/search/nucl-ex?searchtype=author&query=Azaiez%2C+F">F. Azaiez</a>, <a href="/search/nucl-ex?searchtype=author&query=Assie%2C+M">M. Assie</a>, <a href="/search/nucl-ex?searchtype=author&query=Bednarczyk%2C+P">P. Bednarczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Borcea%2C+C">C. Borcea</a>, <a href="/search/nucl-ex?searchtype=author&query=Burger%2C+A">A. Burger</a>, <a href="/search/nucl-ex?searchtype=author&query=Burgunder%2C+G">G. Burgunder</a>, <a href="/search/nucl-ex?searchtype=author&query=Buta%2C+A">A. Buta</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A0ceres%2C+L">L. C脿ceres</a>, <a href="/search/nucl-ex?searchtype=author&query=Cl%C3%A9ment%2C+2+E">2 E. Cl茅ment</a>, <a href="/search/nucl-ex?searchtype=author&query=Coquard%2C+L">L. Coquard</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Angelis%2C+G">G. de Angelis</a>, <a href="/search/nucl-ex?searchtype=author&query=de+France%2C+G">G. de France</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+F+d+O">F. de Oliveira Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Dewald%2C+A">A. Dewald</a>, <a href="/search/nucl-ex?searchtype=author&query=Dijon%2C+A">A. Dijon</a>, <a href="/search/nucl-ex?searchtype=author&query=Dombradi%2C+Z">Z. Dombradi</a>, <a href="/search/nucl-ex?searchtype=author&query=Fiori%2C+E">E. Fiori</a>, <a href="/search/nucl-ex?searchtype=author&query=Fransen%2C+C">C. Fransen</a>, <a href="/search/nucl-ex?searchtype=author&query=Friessner%2C+G">G. Friessner</a> , et al. (23 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="1105.4072v2-abstract-short" style="display: inline;"> We report here the first direct lifetime measurement of the 2+1 state in 72,74Zn. The neutron-rich beam was produced by in-flight fragmentation of 76Ge at the Grand Acc茅l茅rateur National d'Ions Lourds and separated with the LISE spectrometer. The 2+1 state was excited by inelastic scattering and knock-out reaction on a CD2 target and its lifetime was measured by the recoil-distance Dopplershift me… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.4072v2-abstract-full').style.display = 'inline'; document.getElementById('1105.4072v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1105.4072v2-abstract-full" style="display: none;"> We report here the first direct lifetime measurement of the 2+1 state in 72,74Zn. The neutron-rich beam was produced by in-flight fragmentation of 76Ge at the Grand Acc茅l茅rateur National d'Ions Lourds and separated with the LISE spectrometer. The 2+1 state was excited by inelastic scattering and knock-out reaction on a CD2 target and its lifetime was measured by the recoil-distance Dopplershift method with the K枚ln plunger device combined with the EXOGAM detectors. The lifetimes of the 2+1 states in 72,74Zn were determined to be 17.9(18) and 27.0(24) ps, which correspond to reduced transition probabilities B(E2; 2+1 \rightarrow 0+) = 385(39) and 370(33) e2fm4, respectively. These values support the idea of a systematic maximum of collectivity at N = 42 for Zn, Ge and Se nuclei. In addition, the available systematics in the neighboring nuclei point towards a transition from a spherical oscillator at N = 40 to complete 纬-softness at N = 42. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.4072v2-abstract-full').style.display = 'none'; document.getElementById('1105.4072v2-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> 24 April, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 May, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">10 pages, 13 figures; accepted for publication in Phys. Rev. C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1005.3969">arXiv:1005.3969</a> <span> [<a href="https://arxiv.org/pdf/1005.3969">pdf</a>, <a href="https://arxiv.org/ps/1005.3969">ps</a>, <a href="https://arxiv.org/format/1005.3969">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.82.031301">10.1103/PhysRevC.82.031301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing pre-formed alpha particles in the ground state of nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Scarpaci%2C+J+A">J. A. Scarpaci</a>, <a href="/search/nucl-ex?searchtype=author&query=Fallot%2C+M">M. Fallot</a>, <a href="/search/nucl-ex?searchtype=author&query=Lacroix%2C+D">D. Lacroix</a>, <a href="/search/nucl-ex?searchtype=author&query=Assie%2C+M">M. Assie</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefebvre%2C+L">L. Lefebvre</a>, <a href="/search/nucl-ex?searchtype=author&query=Frascaria%2C+N">N. Frascaria</a>, <a href="/search/nucl-ex?searchtype=author&query=Beaumel%2C+D">D. Beaumel</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhar%2C+C">C. Bhar</a>, <a href="/search/nucl-ex?searchtype=author&query=Blumenfeld%2C+Y">Y. Blumenfeld</a>, <a href="/search/nucl-ex?searchtype=author&query=Chbihi%2C+A">A. Chbihi</a>, <a href="/search/nucl-ex?searchtype=author&query=Chomaz%2C+P">Ph. Chomaz</a>, <a href="/search/nucl-ex?searchtype=author&query=Desesquelles%2C+P">P. Desesquelles</a>, <a href="/search/nucl-ex?searchtype=author&query=Frankland%2C+J">J. Frankland</a>, <a href="/search/nucl-ex?searchtype=author&query=Idbarkach%2C+H">H. Idbarkach</a>, <a href="/search/nucl-ex?searchtype=author&query=Khan%2C+E">E. Khan</a>, <a href="/search/nucl-ex?searchtype=author&query=Laville%2C+J+L">J. L. Laville</a>, <a href="/search/nucl-ex?searchtype=author&query=Plagnol%2C+E">E. Plagnol</a>, <a href="/search/nucl-ex?searchtype=author&query=Pollacco%2C+E+C">E. C. Pollacco</a>, <a href="/search/nucl-ex?searchtype=author&query=Roussel-Chomaz%2C+P">P. Roussel-Chomaz</a>, <a href="/search/nucl-ex?searchtype=author&query=Roynette%2C+J+C">J. C. Roynette</a>, <a href="/search/nucl-ex?searchtype=author&query=Shrivastava%2C+A">A. Shrivastava</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="1005.3969v1-abstract-short" style="display: inline;"> In this Letter, we report on alpha particle emission through the nuclear break-up in the reaction 40Ca on a 40Ca target at 50A MeV. It is observed that, similarly to nucleons, alpha particles can be emitted to the continuum with very specific angular distribution during the reaction. The alpha particle properties can be understood as resulting from an alpha cluster in the daughter nucleus that is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3969v1-abstract-full').style.display = 'inline'; document.getElementById('1005.3969v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1005.3969v1-abstract-full" style="display: none;"> In this Letter, we report on alpha particle emission through the nuclear break-up in the reaction 40Ca on a 40Ca target at 50A MeV. It is observed that, similarly to nucleons, alpha particles can be emitted to the continuum with very specific angular distribution during the reaction. The alpha particle properties can be understood as resulting from an alpha cluster in the daughter nucleus that is perturbed by the short range nuclear attraction of the collision partner and emitted. A time-dependent theory that describe the alpha particle wave-function evolution is able to reproduce qualitatively the observed angular distribution. This mechanism offers new possibilities to study alpha particle properties in the nuclear medium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.3969v1-abstract-full').style.display = 'none'; document.getElementById('1005.3969v1-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 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2010. </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</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.C82:031301,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0901.0848">arXiv:0901.0848</a> <span> [<a href="https://arxiv.org/pdf/0901.0848">pdf</a>, <a href="https://arxiv.org/ps/0901.0848">ps</a>, <a href="https://arxiv.org/format/0901.0848">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="Strongly Correlated Electrons">cond-mat.str-el</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/PhysRevLett.102.202501">10.1103/PhysRevLett.102.202501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing neutron correlations through nuclear break-up </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Assie%2C+M">Marlene Assie</a>, <a href="/search/nucl-ex?searchtype=author&query=Lacroix%2C+D">Denis Lacroix</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="0901.0848v2-abstract-short" style="display: inline;"> The effect of initial correlations between nucleons on the nuclear break-up mechanism is studied. A quantum transport theory which extends standard mean-field approach is developed to incorporate short range pairing correlation as well as direct nucleon-nucleon collisions. A time evolution of the nuclear break-up from a correlated system leading to the emission of two particles to the continuum… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.0848v2-abstract-full').style.display = 'inline'; document.getElementById('0901.0848v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0901.0848v2-abstract-full" style="display: none;"> The effect of initial correlations between nucleons on the nuclear break-up mechanism is studied. A quantum transport theory which extends standard mean-field approach is developed to incorporate short range pairing correlation as well as direct nucleon-nucleon collisions. A time evolution of the nuclear break-up from a correlated system leading to the emission of two particles to the continuum is performed. We show that initial correlations have strong influence on relative angles between particles emitted in coincidence. The present qualitative study indicates that nuclear break-up might be a tool to infer the residual interaction between nucleons in the nuclear medium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.0848v2-abstract-full').style.display = 'none'; document.getElementById('0901.0848v2-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 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 January, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">final published version in Phys. Rev. Lett. 102 (2009), 4 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.Rev.Lett.102:202501,2009 </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 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