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class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.15898">arXiv:2412.15898</a> <span> [<a href="https://arxiv.org/pdf/2412.15898">pdf</a>, <a href="https://arxiv.org/format/2412.15898">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.111.014605">10.1103/PhysRevC.111.014605 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Meaurement of spin vs. TKE of $^{144}$Ba produced in spontaneous fission of $^{252}$Cf </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Giha%2C+N+P">N. P. Giha</a>, <a href="/search/?searchtype=author&query=Marin%2C+S">S. Marin</a>, <a href="/search/?searchtype=author&query=Tolstukhin%2C+I+A">I. A. Tolstukhin</a>, <a href="/search/?searchtype=author&query=Oberling%2C+M+B">M. B. Oberling</a>, <a href="/search/?searchtype=author&query=Knaack%2C+R+A">R. A. Knaack</a>, <a href="/search/?searchtype=author&query=Mueller-Gatermann%2C+C">C. Mueller-Gatermann</a>, <a href="/search/?searchtype=author&query=Korichi%2C+A">A. Korichi</a>, <a href="/search/?searchtype=author&query=Bhatt%2C+K">K. Bhatt</a>, <a href="/search/?searchtype=author&query=Carpenter%2C+M+P">M. P. Carpenter</a>, <a href="/search/?searchtype=author&query=Foug%C3%A8res%2C+C">C. Foug猫res</a>, <a href="/search/?searchtype=author&query=Karayonchev%2C+V">V. Karayonchev</a>, <a href="/search/?searchtype=author&query=Kay%2C+B+P">B. P. Kay</a>, <a href="/search/?searchtype=author&query=Lauritsen%2C+T">T. Lauritsen</a>, <a href="/search/?searchtype=author&query=Seweryniak%2C+D">D. Seweryniak</a>, <a href="/search/?searchtype=author&query=Watwood%2C+N">N. Watwood</a>, <a href="/search/?searchtype=author&query=Duke%2C+D+L">D. L. Duke</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Montoya%2C+K+B">K. B. Montoya</a>, <a href="/search/?searchtype=author&query=Connolly%2C+D+S">D. S. Connolly</a>, <a href="/search/?searchtype=author&query=Loveland%2C+W">W. Loveland</a>, <a href="/search/?searchtype=author&query=Hernandez%2C+I+E">I. E. Hernandez</a>, <a href="/search/?searchtype=author&query=Clarke%2C+S+D">S. D. Clarke</a>, <a href="/search/?searchtype=author&query=Pozzi%2C+S+A">S. A. Pozzi</a>, <a href="/search/?searchtype=author&query=Tovesson%2C+F">F. Tovesson</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="2412.15898v1-abstract-short" style="display: inline;"> We measure the average spin of $^{144}$Ba, a common fragment produced in $^{252}$Cf(sf), as a function of the total kinetic energy (TKE). We combined for the first time a twin Frisch-gridded ionization chamber with a world-class $纬$-ray spectrometer that was designed to measure high-multiplicity $纬$-ray events, Gammasphere. The chamber, loaded with a $^{252}$Cf(sf) source, provides a fission trigg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.15898v1-abstract-full').style.display = 'inline'; document.getElementById('2412.15898v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.15898v1-abstract-full" style="display: none;"> We measure the average spin of $^{144}$Ba, a common fragment produced in $^{252}$Cf(sf), as a function of the total kinetic energy (TKE). We combined for the first time a twin Frisch-gridded ionization chamber with a world-class $纬$-ray spectrometer that was designed to measure high-multiplicity $纬$-ray events, Gammasphere. The chamber, loaded with a $^{252}$Cf(sf) source, provides a fission trigger, the TKE of the fragments, the approximate fragment masses, and the polar angle of the fission axis. Gammasphere provides the total $纬$-ray yield, fragment identification through the tagging of decay $纬$ rays, and the feeding of rotational bands in the fragments. We determine the dependence of the average spin of $^{144}$Ba on the fragments' TKE by correlating the fragment properties with the distribution of discrete levels that are fed. We find that the average spin only changes by about $0.5$ $\hbar$ across the TKE range of 158-203 MeV. The virtual independence of the spin on TKE suggests that spin is not solely generated through the statistical excitation of rotational modes, and more complex mechanisms are required. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.15898v1-abstract-full').style.display = 'none'; document.getElementById('2412.15898v1-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> 20 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">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/2412.01723">arXiv:2412.01723</a> <span> [<a href="https://arxiv.org/pdf/2412.01723">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="High Energy Astrophysical Phenomena">astro-ph.HE</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41467-024-54040-4">10.1038/s41467-024-54040-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Enhanced production of 60Fe in massive stars </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Richman%2C+D">D. Richman</a>, <a href="/search/?searchtype=author&query=Couture%2C+A">A. Couture</a>, <a href="/search/?searchtype=author&query=Fields%2C+C+E">C. E. Fields</a>, <a href="/search/?searchtype=author&query=Liddick%2C+S+N">S. N. Liddick</a>, <a href="/search/?searchtype=author&query=Childers%2C+K">K. Childers</a>, <a href="/search/?searchtype=author&query=Crider%2C+B+P">B. P. Crider</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Dombos%2C+A+C">A. C. Dombos</a>, <a href="/search/?searchtype=author&query=Gastis%2C+P">P. Gastis</a>, <a href="/search/?searchtype=author&query=Guttormsen%2C+M">M. Guttormsen</a>, <a href="/search/?searchtype=author&query=Hermansen%2C+K">K. Hermansen</a>, <a href="/search/?searchtype=author&query=Larsen%2C+A+C">A. C. Larsen</a>, <a href="/search/?searchtype=author&query=Lewis%2C+R">R. Lewis</a>, <a href="/search/?searchtype=author&query=Lyons%2C+S">S. Lyons</a>, <a href="/search/?searchtype=author&query=Midtb%C3%B8%2C+J+E">J. E. Midtb酶</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Muecher%2C+D">D. Muecher</a>, <a href="/search/?searchtype=author&query=Naqvi%2C+F">F. Naqvi</a>, <a href="/search/?searchtype=author&query=Palmisano-Kyle%2C+A">A. Palmisano-Kyle</a>, <a href="/search/?searchtype=author&query=Perdikakis%2C+G">G. Perdikakis</a>, <a href="/search/?searchtype=author&query=Prokop%2C+C">C. Prokop</a>, <a href="/search/?searchtype=author&query=Schatz%2C+H">H. Schatz</a>, <a href="/search/?searchtype=author&query=Smith%2C+M+K">M. K. Smith</a>, <a href="/search/?searchtype=author&query=Sumithrarachchi%2C+C">C. Sumithrarachchi</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="2412.01723v1-abstract-short" style="display: inline;"> Massive stars are a major source of chemical elements in the cosmos, ejecting freshly produced nuclei through winds and core-collapse supernova explosions into the interstellar medium. Among the material ejected, long lived radioisotopes, such as 60Fe (iron) and 26Al (aluminum), offer unique signs of active nucleosynthesis in our galaxy. There is a long-standing discrepancy between the observed 60… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.01723v1-abstract-full').style.display = 'inline'; document.getElementById('2412.01723v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.01723v1-abstract-full" style="display: none;"> Massive stars are a major source of chemical elements in the cosmos, ejecting freshly produced nuclei through winds and core-collapse supernova explosions into the interstellar medium. Among the material ejected, long lived radioisotopes, such as 60Fe (iron) and 26Al (aluminum), offer unique signs of active nucleosynthesis in our galaxy. There is a long-standing discrepancy between the observed 60Fe/26Al ratio by 纬-ray telescopes and predictions from supernova models. This discrepancy has been attributed to uncertainties in the nuclear reaction networks producing 60Fe, and one reaction in particular, the neutron-capture on 59Fe. Here we present experimental results that provide a strong constraint on this reaction. We use these results to show that the production of 60Fe in massive stars is higher than previously thought, further increasing the discrepancy between observed and predicted 60Fe/26Al ratios. The persisting discrepancy can therefore not be attributed to nuclear uncertainties, and points to issues in massive-star models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.01723v1-abstract-full').style.display = 'none'; document.getElementById('2412.01723v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature Communications ( 2024) 15:9608 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.12895">arXiv:2111.12895</a> <span> [<a href="https://arxiv.org/pdf/2111.12895">pdf</a>, <a href="https://arxiv.org/format/2111.12895">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"> Properties of correlated fission fragments from neutron induced fission of Np-237 at incident neutron energies between 200 keV and 100 MeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Connolly%2C+D">D. Connolly</a>, <a href="/search/?searchtype=author&query=Montoya%2C+K+B">K. B. Montoya</a>, <a href="/search/?searchtype=author&query=Duke%2C+D+L">D. L. Duke</a>, <a href="/search/?searchtype=author&query=Greife%2C+U">U. Greife</a>, <a href="/search/?searchtype=author&query=Lovell%2C+A+E">A. E. Lovell</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Prokop%2C+C">C. Prokop</a>, <a href="/search/?searchtype=author&query=Rudziensky%2C+E">E. Rudziensky</a>, <a href="/search/?searchtype=author&query=Schmitt%2C+K">K. Schmitt</a>, <a href="/search/?searchtype=author&query=Winkelbauer%2C+J">J. Winkelbauer</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="2111.12895v4-abstract-short" style="display: inline;"> Neutron-induced fission of $^{237}$Np has been measured over a wide range of incident neutron energies using a twin Frisch-gridded ionization chamber (TFGIC) and a thin-backed $^{237}$Np target. These measurements were performed at the Los Alamos Neutron Science Center - Weapons Neutron Research (LANSCE - WNR) facility, which provides a collimated beam of neutrons with energies ranging from 100s o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.12895v4-abstract-full').style.display = 'inline'; document.getElementById('2111.12895v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.12895v4-abstract-full" style="display: none;"> Neutron-induced fission of $^{237}$Np has been measured over a wide range of incident neutron energies using a twin Frisch-gridded ionization chamber (TFGIC) and a thin-backed $^{237}$Np target. These measurements were performed at the Los Alamos Neutron Science Center - Weapons Neutron Research (LANSCE - WNR) facility, which provides a collimated beam of neutrons with energies ranging from 100s of keV to 100s of MeV. The data were analyzed using the double-energy ($2E$) method, with mass-dependent corrections for prompt-fission neutrons and pulse height defect. Pre- and post-neutron evaporation average total kinetic energy ($\langle TKE\rangle$) values are reported for 54 incident neutron energies in the energy range $0.20 \le E_n \le 100.0$ MeV and compared to existing data and evaluations. Pre- and post-neutron evaporation mass yields were extracted with a full width at half maximum (FWHM) resolution of 4u and compared to existing data and evaluations. The present $\langle TKE\rangle$ and mass yield data agree with previous results and also with statistical models of $^{237}$Np$(n,f)$ at incident neutron energies between $E_n = 0.2 - 20.0$ MeV. A flattening of the $\langle TKE\rangle$ data is observed (relative to the prediction of the GEF model) above $E_n = 20.0$ MeV. However, the interpretation of this discrepancy is unclear as the analysis method's neglect of incomplete momentum transfer at high energies, as well as pre-equilibrium pre-fission phenomena likely have a significant impact on the measurement at such high incident neutron energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.12895v4-abstract-full').style.display = 'none'; document.getElementById('2111.12895v4-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 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 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">28 pages, 13 captioned figures, 4 tables, submitted to Journal of Physics G</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LA-UR-21-31492 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.07200">arXiv:2111.07200</a> <span> [<a href="https://arxiv.org/pdf/2111.07200">pdf</a>, <a href="https://arxiv.org/format/2111.07200">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Subcellular Processes">q-bio.SC</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantitative Methods">q-bio.QM</span> </div> </div> <p class="title is-5 mathjax"> Predicting the Directional Transport of Multivalent Cargo from Position Dependent Binding and Unbinding Rates </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Mosby%2C+L+S">Lewis Scott Mosby</a>, <a href="/search/?searchtype=author&query=Straube%2C+A">Anne Straube</a>, <a href="/search/?searchtype=author&query=Polin%2C+M">Marco Polin</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="2111.07200v1-abstract-short" style="display: inline;"> Multivalent cargo that can interact with substrates via multiple interaction sites exhibit shared characteristics despite being found in different systems at different length-scales. Here, a general analytical model has been developed that can describe the motion of multivalent cargo as a response to position dependence in the binding and unbinding rates of their interaction sites. Cargo exhibit b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.07200v1-abstract-full').style.display = 'inline'; document.getElementById('2111.07200v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.07200v1-abstract-full" style="display: none;"> Multivalent cargo that can interact with substrates via multiple interaction sites exhibit shared characteristics despite being found in different systems at different length-scales. Here, a general analytical model has been developed that can describe the motion of multivalent cargo as a response to position dependence in the binding and unbinding rates of their interaction sites. Cargo exhibit both an effective diffusivity and velocity, which acts in the direction of increasing cargo-substrate binding rate and decreasing cargo-substrate unbinding rate. This model can reproduce previously published experimental findings using only the binding and unbinding rate distributions of cargo interaction sites, and without any further parameter fitting. Extension of the cargo binding model to two dimensions reveals an effective velocity with the same properties as that derived for the $1$D case. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.07200v1-abstract-full').style.display = 'none'; document.getElementById('2111.07200v1-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 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">13 pages, 5 figures (plus Supplementary Material)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.02881">arXiv:2107.02881</a> <span> [<a href="https://arxiv.org/pdf/2107.02881">pdf</a>, <a href="https://arxiv.org/format/2107.02881">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"> Measurement of the $^{239}$Pu(n,f)/$^{235}$U(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Snyder%2C+L">L. Snyder</a>, <a href="/search/?searchtype=author&query=Anastasiou%2C+M">M. Anastasiou</a>, <a href="/search/?searchtype=author&query=Bowden%2C+N+S">N. S. Bowden</a>, <a href="/search/?searchtype=author&query=Bundgaard%2C+J">J. Bundgaard</a>, <a href="/search/?searchtype=author&query=Casperson%2C+R+J">R. J. Casperson</a>, <a href="/search/?searchtype=author&query=Cebra%2C+D+A">D. A. Cebra</a>, <a href="/search/?searchtype=author&query=Classen%2C+T">T. Classen</a>, <a href="/search/?searchtype=author&query=Dongwi%2C+D+H">D. H. Dongwi</a>, <a href="/search/?searchtype=author&query=Fotiades%2C+N">N. Fotiades</a>, <a href="/search/?searchtype=author&query=Gearhart%2C+J">J. Gearhart</a>, <a href="/search/?searchtype=author&query=Geppert-Kleinrath%2C+V">V. Geppert-Kleinrath</a>, <a href="/search/?searchtype=author&query=Greife%2C+U">U. Greife</a>, <a href="/search/?searchtype=author&query=Hagmann%2C+C">C. Hagmann</a>, <a href="/search/?searchtype=author&query=Heffner%2C+M">M. Heffner</a>, <a href="/search/?searchtype=author&query=Hensle%2C+D">D. Hensle</a>, <a href="/search/?searchtype=author&query=Higgins%2C+D">D. Higgins</a>, <a href="/search/?searchtype=author&query=Isenhower%2C+L+D">L. D. Isenhower</a>, <a href="/search/?searchtype=author&query=Kazkaz%2C+K">K. Kazkaz</a>, <a href="/search/?searchtype=author&query=Kemnitz%2C+A">A. Kemnitz</a>, <a href="/search/?searchtype=author&query=King%2C+J">J. King</a>, <a href="/search/?searchtype=author&query=Klay%2C+J+L">J. L. Klay</a>, <a href="/search/?searchtype=author&query=Latta%2C+J">J. Latta</a>, <a href="/search/?searchtype=author&query=Leal-Cidoncha%2C+E">E. Leal-Cidoncha</a>, <a href="/search/?searchtype=author&query=Loveland%2C+W">W. Loveland</a>, <a href="/search/?searchtype=author&query=Magee%2C+J+A">J. A. Magee</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="2107.02881v1-abstract-short" style="display: inline;"> The $^{239}$Pu(n,f)/$^{235}$U(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement uncertainties. The measurement was performed at the Los Alamos Neutron Science Center which provi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.02881v1-abstract-full').style.display = 'inline'; document.getElementById('2107.02881v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.02881v1-abstract-full" style="display: none;"> The $^{239}$Pu(n,f)/$^{235}$U(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement uncertainties. The measurement was performed at the Los Alamos Neutron Science Center which provides a pulsed white source of neutrons. The data are recommended to be used as a cross-section ratio shape. A discussion of the status of the absolute normalization and comparisons to ENDF evaluations and previous measurements is included. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.02881v1-abstract-full').style.display = 'none'; document.getElementById('2107.02881v1-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 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2106.06063">arXiv:2106.06063</a> <span> [<a href="https://arxiv.org/pdf/2106.06063">pdf</a>, <a href="https://arxiv.org/format/2106.06063">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="Instrumentation and Detectors">physics.ins-det</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.2021.165864">10.1016/j.nima.2021.165864 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of material isotopics and atom number ratio with alpha-particle spectroscopy for the NIFFTE fission Time Projection Chamber actinide target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Monterial%2C+M">M. Monterial</a>, <a href="/search/?searchtype=author&query=Schmitt%2C+K+T">K. T. Schmitt</a>, <a href="/search/?searchtype=author&query=Prokop%2C+C">C. Prokop</a>, <a href="/search/?searchtype=author&query=Leal-Cidoncha%2C+E">E. Leal-Cidoncha</a>, <a href="/search/?searchtype=author&query=Anastasiou%2C+M">M. Anastasiou</a>, <a href="/search/?searchtype=author&query=Bowden%2C+N+S">N. S. Bowden</a>, <a href="/search/?searchtype=author&query=Bundgaard%2C+J">J. Bundgaard</a>, <a href="/search/?searchtype=author&query=Casperson%2C+R+J">R. J. Casperson</a>, <a href="/search/?searchtype=author&query=Cebra%2C+D+A">D. A. Cebra</a>, <a href="/search/?searchtype=author&query=Classen%2C+T">T. Classen</a>, <a href="/search/?searchtype=author&query=Dongwi%2C+D+H">D. H. Dongwi</a>, <a href="/search/?searchtype=author&query=Fotiades%2C+N">N. Fotiades</a>, <a href="/search/?searchtype=author&query=Gearhart%2C+J">J. Gearhart</a>, <a href="/search/?searchtype=author&query=Geppert-Kleinrath%2C+V">V. Geppert-Kleinrath</a>, <a href="/search/?searchtype=author&query=Greife%2C+U">U. Greife</a>, <a href="/search/?searchtype=author&query=Hagmann%2C+C">C. Hagmann</a>, <a href="/search/?searchtype=author&query=Heffner%2C+M">M. Heffner</a>, <a href="/search/?searchtype=author&query=Hensle%2C+D">D. Hensle</a>, <a href="/search/?searchtype=author&query=Higgins%2C+D">D. Higgins</a>, <a href="/search/?searchtype=author&query=Isenhower%2C+L+D">L. D. Isenhower</a>, <a href="/search/?searchtype=author&query=Kazkaz%2C+K">K. Kazkaz</a>, <a href="/search/?searchtype=author&query=Kemnitz%2C+A">A. Kemnitz</a>, <a href="/search/?searchtype=author&query=King%2C+J">J. King</a>, <a href="/search/?searchtype=author&query=Klay%2C+J+L">J. L. Klay</a>, <a href="/search/?searchtype=author&query=Latta%2C+J">J. Latta</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="2106.06063v2-abstract-short" style="display: inline;"> We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target with alpha-spectroscopy and mass spectrometry. The double-sided actinide target, with primarily Pu-239 on one side and U-235 on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio betwee… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2106.06063v2-abstract-full').style.display = 'inline'; document.getElementById('2106.06063v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2106.06063v2-abstract-full" style="display: none;"> We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target with alpha-spectroscopy and mass spectrometry. The double-sided actinide target, with primarily Pu-239 on one side and U-235 on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is intended to provide an absolute normalization of the measured fission cross-section ratio. The Pu-239/U-235 atom number ratio was measured with a combination of mass spectrometry and alpha-spectroscopy with a planar silicon detector with uncertainties of less than 1%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2106.06063v2-abstract-full').style.display = 'none'; document.getElementById('2106.06063v2-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">v1</span> submitted 10 June, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 5 figures, 6 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.00024">arXiv:2006.00024</a> <span> [<a href="https://arxiv.org/pdf/2006.00024">pdf</a>, <a href="https://arxiv.org/format/2006.00024">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.102.034601">10.1103/PhysRevC.102.034601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Isotopically resolved neutron total cross sections at intermediate energies </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Pruitt%2C+C+D">C. D. Pruitt</a>, <a href="/search/?searchtype=author&query=Charity%2C+R+J">R. J. Charity</a>, <a href="/search/?searchtype=author&query=Sobotka%2C+L+G">L. G. Sobotka</a>, <a href="/search/?searchtype=author&query=Elson%2C+J+M">J. M. Elson</a>, <a href="/search/?searchtype=author&query=Hoff%2C+D+E+M">D. E. M. Hoff</a>, <a href="/search/?searchtype=author&query=Brown%2C+K+W">K. W. Brown</a>, <a href="/search/?searchtype=author&query=Atkinson%2C+M+C">M. C. Atkinson</a>, <a href="/search/?searchtype=author&query=Dickhoff%2C+W+H">W. H. Dickhoff</a>, <a href="/search/?searchtype=author&query=Lee%2C+H+Y">H. Y. Lee</a>, <a href="/search/?searchtype=author&query=Devlin%2C+M">M. Devlin</a>, <a href="/search/?searchtype=author&query=Fotiades%2C+N">N. Fotiades</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</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="2006.00024v2-abstract-short" style="display: inline;"> The neutron total cross sections $蟽_{tot}$ of $^{16,18}$O, $^{58,64}$Ni, $^{103}$Rh, and $^{112,124}$Sn have been measured at the Los Alamos Neutron Science Center (LANSCE) from low to intermediate energies (3 $\leq E_{lab} \leq$ 450 MeV) by leveraging waveform-digitizer technology. The $蟽_{tot}$ relative differences between isotopes are presented, revealing additional information about the isovec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.00024v2-abstract-full').style.display = 'inline'; document.getElementById('2006.00024v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.00024v2-abstract-full" style="display: none;"> The neutron total cross sections $蟽_{tot}$ of $^{16,18}$O, $^{58,64}$Ni, $^{103}$Rh, and $^{112,124}$Sn have been measured at the Los Alamos Neutron Science Center (LANSCE) from low to intermediate energies (3 $\leq E_{lab} \leq$ 450 MeV) by leveraging waveform-digitizer technology. The $蟽_{tot}$ relative differences between isotopes are presented, revealing additional information about the isovector components needed for an accurate optical-model description away from stability. Digitizer-enabled $蟽_{tot}$-measurement techniques are discussed and a series of uncertainty-quantified dispersive optical model (DOM) analyses using these new data is presented, validating the use of the DOM for modeling light systems ($^{16,18}$O) and systems with open neutron shells ($^{58,64}$Ni and $^{112,124}$Sn). The valence-nucleon spectroscopic factors extracted for each isotope reaffirm the usefulness of high-energy proton reaction cross sections for characterizing depletion from the mean-field expectation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.00024v2-abstract-full').style.display = 'none'; document.getElementById('2006.00024v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">28 pages, 20 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 034601 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.09381">arXiv:2001.09381</a> <span> [<a href="https://arxiv.org/pdf/2001.09381">pdf</a>, <a href="https://arxiv.org/format/2001.09381">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.102.014605">10.1103/PhysRevC.102.014605 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutron Induced Fission Fragment Angular Distributions, Anisotropy, and Linear Momentum Transfer Measured with the NIFFTE Fission Time Projection Chamber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Hensle%2C+D">D. Hensle</a>, <a href="/search/?searchtype=author&query=Barker%2C+J+T">J. T. Barker</a>, <a href="/search/?searchtype=author&query=Barrett%2C+J+S">J. S. Barrett</a>, <a href="/search/?searchtype=author&query=Bowden%2C+N+S">N. S. Bowden</a>, <a href="/search/?searchtype=author&query=Brewster%2C+K+J">K. J. Brewster</a>, <a href="/search/?searchtype=author&query=Bundgaard%2C+J">J. Bundgaard</a>, <a href="/search/?searchtype=author&query=Case%2C+Z+Q">Z. Q. Case</a>, <a href="/search/?searchtype=author&query=Casperson%2C+R+J">R. J. Casperson</a>, <a href="/search/?searchtype=author&query=Cebra%2C+D+A">D. A. Cebra</a>, <a href="/search/?searchtype=author&query=Classen%2C+T">T. Classen</a>, <a href="/search/?searchtype=author&query=Duke%2C+D+L">D. L. Duke</a>, <a href="/search/?searchtype=author&query=Fotiadis%2C+N">N. Fotiadis</a>, <a href="/search/?searchtype=author&query=Gearhart%2C+J">J Gearhart</a>, <a href="/search/?searchtype=author&query=Geppert-Kleinrath%2C+V">V. Geppert-Kleinrath</a>, <a href="/search/?searchtype=author&query=Greife%2C+U">U. Greife</a>, <a href="/search/?searchtype=author&query=Guardincerri%2C+E">E. Guardincerri</a>, <a href="/search/?searchtype=author&query=Hagmann%2C+C">C. Hagmann</a>, <a href="/search/?searchtype=author&query=Heffner%2C+M">M. Heffner</a>, <a href="/search/?searchtype=author&query=Hicks%2C+C+R">C. R. Hicks</a>, <a href="/search/?searchtype=author&query=Higgins%2C+D">D. Higgins</a>, <a href="/search/?searchtype=author&query=Isenhower%2C+L+D">L. D. Isenhower</a>, <a href="/search/?searchtype=author&query=Kazkaz%2C+K">K. Kazkaz</a>, <a href="/search/?searchtype=author&query=Kemnitz%2C+A">A. Kemnitz</a>, <a href="/search/?searchtype=author&query=Kiesling%2C+K+J">K. J. Kiesling</a>, <a href="/search/?searchtype=author&query=King%2C+J">J. King</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="2001.09381v1-abstract-short" style="display: inline;"> The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) collaboration has performed measurements with a fission time projection chamber (fissionTPC) to study the fission process by reconstructing full three-dimensional tracks of fission fragments and other ionizing radiation. The amount of linear momentum imparted to the fissioning nucleus by the incident neutron can be inferred by measu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.09381v1-abstract-full').style.display = 'inline'; document.getElementById('2001.09381v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.09381v1-abstract-full" style="display: none;"> The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) collaboration has performed measurements with a fission time projection chamber (fissionTPC) to study the fission process by reconstructing full three-dimensional tracks of fission fragments and other ionizing radiation. The amount of linear momentum imparted to the fissioning nucleus by the incident neutron can be inferred by measuring the opening angle between the fission fragments. Using this measured linear momentum, fission fragment angular distributions can be converted to the center-of-mass frame for anisotropy measurements. Angular anisotropy is an important experimental observable for understanding the quantum mechanical state of the fissioning nucleus and vital to determining detection efficiency for cross section measurements. Neutron linear momentum transfer to fissioning $^{235}$U, $^{238}$U, and $^{239}$Pu and fission fragment angular anisotropy of $^{235}$U and $^{238}$U as a function of neutron energies in the range 130 keV--250 MeV are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.09381v1-abstract-full').style.display = 'none'; document.getElementById('2001.09381v1-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> 25 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 014605 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.10558">arXiv:1904.10558</a> <span> [<a href="https://arxiv.org/pdf/1904.10558">pdf</a>, <a href="https://arxiv.org/ps/1904.10558">ps</a>, <a href="https://arxiv.org/format/1904.10558">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="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> 1H(n,el) as a Cross Section Reference in a White Source Neutron Beam With the fissionTPC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Walsh%2C+N+I">N. I. Walsh</a>, <a href="/search/?searchtype=author&query=Barker%2C+J+T">J. T. Barker</a>, <a href="/search/?searchtype=author&query=Bowden%2C+N+S">N. S. Bowden</a>, <a href="/search/?searchtype=author&query=Brewster%2C+K+J">K. J. Brewster</a>, <a href="/search/?searchtype=author&query=Casperson%2C+R+J">R. J. Casperson</a>, <a href="/search/?searchtype=author&query=Classen%2C+T">T. Classen</a>, <a href="/search/?searchtype=author&query=Fotiadis%2C+N">N. Fotiadis</a>, <a href="/search/?searchtype=author&query=Greife%2C+U">U. Greife</a>, <a href="/search/?searchtype=author&query=Guardincerri%2C+E">E. Guardincerri</a>, <a href="/search/?searchtype=author&query=Hagmann%2C+C">C. Hagmann</a>, <a href="/search/?searchtype=author&query=Heffner%2C+M">M. Heffner</a>, <a href="/search/?searchtype=author&query=Hensle%2C+D">D. Hensle</a>, <a href="/search/?searchtype=author&query=Hicks%2C+C+R">C. R. Hicks</a>, <a href="/search/?searchtype=author&query=Higgins%2C+D">D. Higgins</a>, <a href="/search/?searchtype=author&query=Isenhower%2C+L+D">L. D. Isenhower</a>, <a href="/search/?searchtype=author&query=Kemnitz%2C+A">A. Kemnitz</a>, <a href="/search/?searchtype=author&query=Kiesling%2C+K+J">K. J. Kiesling</a>, <a href="/search/?searchtype=author&query=King%2C+J">J. King</a>, <a href="/search/?searchtype=author&query=Klay%2C+J+L">J. L. Klay</a>, <a href="/search/?searchtype=author&query=Latta%2C+J">J. Latta</a>, <a href="/search/?searchtype=author&query=Loveland%2C+W">W. Loveland</a>, <a href="/search/?searchtype=author&query=Magee%2C+J+A">J. A. Magee</a>, <a href="/search/?searchtype=author&query=Mendenhall%2C+M+P">M. P. Mendenhall</a>, <a href="/search/?searchtype=author&query=Monterial%2C+M">M. Monterial</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</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="1904.10558v1-abstract-short" style="display: inline;"> We provide a quantitative description of a method to measure neutron-induced fission cross sections in ratio to elastic hydrogen scattering in a white-source neutron beam with the fission Time Projection Chamber. This detector has measured precision fission cross section ratios using actinide references such as $^{235}$U(n,f) and $^{238}$U(n,f). However, by employing a more precise reference such… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.10558v1-abstract-full').style.display = 'inline'; document.getElementById('1904.10558v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.10558v1-abstract-full" style="display: none;"> We provide a quantitative description of a method to measure neutron-induced fission cross sections in ratio to elastic hydrogen scattering in a white-source neutron beam with the fission Time Projection Chamber. This detector has measured precision fission cross section ratios using actinide references such as $^{235}$U(n,f) and $^{238}$U(n,f). However, by employing a more precise reference such as the H(n,el) cross section there is the potential to further reduce the evaluation uncertainties of the measured cross sections. In principle the fissionTPC could provide a unique measurement by simultaneously measuring both fission fragments and proton recoils over a large solid angle. We investigate one method with a hydrogenous gas target and with the neutron energy determined by the proton recoil kinematics. This method enables the measurement to be performed in a white-source neutron beam and with the current configuration of the fissionTPC. We show that while such a measurement is feasible in the energy range of 0.5 MeV to $\sim$10 MeV, uncertainties on the proton detection efficiency and the neutron energy resolution do not allow us to preform a fission ratio measurement to the desired precision. Utilizing either a direct measurement of the neutron time-of-flight for the recoil proton or a mono-energetic neutron source or some combination of both would provide a path to a sub-percent precision measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.10558v1-abstract-full').style.display = 'none'; document.getElementById('1904.10558v1-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 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LLNL-JRNL-769047 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.00856">arXiv:1805.00856</a> <span> [<a href="https://arxiv.org/pdf/1805.00856">pdf</a>, <a href="https://arxiv.org/format/1805.00856">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.97.054329">10.1103/PhysRevC.97.054329 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Enhanced low-energy $纬$-decay strength of $^{70}$Ni and its robustness within the shell model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Larsen%2C+A+C">A. C. Larsen</a>, <a href="/search/?searchtype=author&query=Midtb%C3%B8%2C+J+E">J. E. Midtb酶</a>, <a href="/search/?searchtype=author&query=Guttormsen%2C+M">M. Guttormsen</a>, <a href="/search/?searchtype=author&query=Renstr%C3%B8m%2C+T">T. Renstr酶m</a>, <a href="/search/?searchtype=author&query=Liddick%2C+S+N">S. N. Liddick</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Karampagia%2C+S">S. Karampagia</a>, <a href="/search/?searchtype=author&query=Brown%2C+B+A">B. A. Brown</a>, <a href="/search/?searchtype=author&query=Achakovskiy%2C+O">O. Achakovskiy</a>, <a href="/search/?searchtype=author&query=Kamerdzhiev%2C+S">S. Kamerdzhiev</a>, <a href="/search/?searchtype=author&query=Bleuel%2C+D+L">D. L. Bleuel</a>, <a href="/search/?searchtype=author&query=Couture%2C+A">A. Couture</a>, <a href="/search/?searchtype=author&query=Campo%2C+L+C">L. Crespo Campo</a>, <a href="/search/?searchtype=author&query=Crider%2C+B+P">B. P. Crider</a>, <a href="/search/?searchtype=author&query=Dombos%2C+A+C">A. C. Dombos</a>, <a href="/search/?searchtype=author&query=Lewis%2C+R">R. Lewis</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Naqvi%2C+F">F. Naqvi</a>, <a href="/search/?searchtype=author&query=Perdikakis%2C+G">G. Perdikakis</a>, <a href="/search/?searchtype=author&query=Prokop%2C+C+J">C. J. Prokop</a>, <a href="/search/?searchtype=author&query=Quinn%2C+S+J">S. J. Quinn</a>, <a href="/search/?searchtype=author&query=Siem%2C+S">S. Siem</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="1805.00856v2-abstract-short" style="display: inline;"> Neutron-capture reactions on very neutron-rich nuclei are essential for heavy-element nucleosynthesis through the rapid neutron-capture process, now shown to take place in neutron-star merger events. For these exotic nuclei, radiative neutron capture is extremely sensitive to their $纬$-emission probability at very low $纬$ energies. In this work, we present measurements of the $纬$-decay strength of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.00856v2-abstract-full').style.display = 'inline'; document.getElementById('1805.00856v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.00856v2-abstract-full" style="display: none;"> Neutron-capture reactions on very neutron-rich nuclei are essential for heavy-element nucleosynthesis through the rapid neutron-capture process, now shown to take place in neutron-star merger events. For these exotic nuclei, radiative neutron capture is extremely sensitive to their $纬$-emission probability at very low $纬$ energies. In this work, we present measurements of the $纬$-decay strength of $^{70}$Ni over the wide range $1.3 \leq E_纬 \leq 8 $ MeV. A significant enhancement is found in the $纬$-decay strength for transitions with $E_纬< 3$ MeV. At present, this is the most neutron-rich nucleus displaying this feature, proving that this phenomenon is not restricted to stable nuclei. We have performed $E1$-strength calculations within the quasiparticle time-blocking approximation, which describe our data above $E_纬\simeq 5$ MeV very well. Moreover, large-scale shell-model calculations indicate an $M1$ nature of the low-energy $纬$ strength. This turns out to be remarkably robust with respect to the choice of interaction, truncation and model space, and we predict its presence in the whole isotopic chain, in particular the neutron-rich $^{72,74,76}\mathrm{Ni}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.00856v2-abstract-full').style.display = 'none'; document.getElementById('1805.00856v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">9 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 97, 054329 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.08678">arXiv:1803.08678</a> <span> [<a href="https://arxiv.org/pdf/1803.08678">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> </div> </div> <p class="title is-5 mathjax"> Neutron-induced reactions in nuclear astrophysics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Reifarth%2C+R">Ren茅 Reifarth</a>, <a href="/search/?searchtype=author&query=Brown%2C+D">David Brown</a>, <a href="/search/?searchtype=author&query=Dababneh%2C+S">Saed Dababneh</a>, <a href="/search/?searchtype=author&query=Litvinov%2C+Y+A">Yuri A. Litvinov</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S+M">Shea M. Mosby</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="1803.08678v1-abstract-short" style="display: inline;"> The quest for the origin of the chemical elements, which we find in our body, in our planet (Earth), in our star (Sun), or in our galaxy (Milky Way) could only be resolved with a thorough understanding of the nuclear physics properties of stable and unstable atomic nuclei. While the elements until iron are either created during the big bang or during fusion reactions in stars, most of the elements… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.08678v1-abstract-full').style.display = 'inline'; document.getElementById('1803.08678v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.08678v1-abstract-full" style="display: none;"> The quest for the origin of the chemical elements, which we find in our body, in our planet (Earth), in our star (Sun), or in our galaxy (Milky Way) could only be resolved with a thorough understanding of the nuclear physics properties of stable and unstable atomic nuclei. While the elements until iron are either created during the big bang or during fusion reactions in stars, most of the elements heavier than iron are produced via neutron-induced reactions. Therefore, neutron capture cross sections of stable and unstable isotopes are important. So far, time-of-flight or activation methods have been applied very successfully, but these methods reach their limits once the isotopes with half-lives shorter than a few months are of interest. A combination of a radioactive beam facility, an ion storage ring and a high flux reactor or a spallation source would allow a direct measurement of neutron-induced reactions over a wide energy range of isotopes with half-lives down to minutes. The idea is to measure neutron-induced reactions on radioactive ions in inverse kinematics. This means, the radioactive ions will pass through a neutron target. In order to efficiently use the rare nuclides as well as to enhance the luminosity, the exotic nuclides can be stored in an ion storage ring. The neutron target can be the core of a research reactor, where one of the central fuel elements is replaced by the evacuated beam pipe of the storage ring. Alternatively, a large moderator surrounding a spallation source can be intersected by the beam pipe of an ion storage ring. Using particle detectors and Schottky spectroscopy, most of the important neutron-induced reactions, such as (n,$纬$), (n,p), (n,$伪$), (n,2n), or (n,f), could be investigated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.08678v1-abstract-full').style.display = 'none'; document.getElementById('1803.08678v1-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 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">14 pages, 11 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Jordan Journal of Physics, Volume 11, Number 1, 2018. pp. 27-34 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.03204">arXiv:1709.03204</a> <span> [<a href="https://arxiv.org/pdf/1709.03204">pdf</a>, <a href="https://arxiv.org/format/1709.03204">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.nima.2017.08.046">10.1016/j.nima.2017.08.046 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A New Measurement of the 6Li(n,伪)t Cross Section at MeV Energies Using a Fission Chamber and 6Li Scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kirsch%2C+L+E">Leo E. Kirsch</a>, <a href="/search/?searchtype=author&query=Devlin%2C+M">M. Devlin</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S+M">S. M. Mosby</a>, <a href="/search/?searchtype=author&query=Gomez%2C+J+A">J. A. Gomez</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="1709.03204v1-abstract-short" style="display: inline;"> A new measurement is presented of the $^6$Li(n,$伪$)t cross section from 245 keV to 10 MeV using a $^{252}$Cf fission chamber with $^6$LiI(Eu) and Cs$_2$LiYCl$_6$:Ce (CLYC) scintillators which act as both target and detector. Neutron energies are determined from the time of flight (TOF) method using the signals from spontaneous fission and reaction product recoil. Simulations of neutron downscatter… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.03204v1-abstract-full').style.display = 'inline'; document.getElementById('1709.03204v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.03204v1-abstract-full" style="display: none;"> A new measurement is presented of the $^6$Li(n,$伪$)t cross section from 245 keV to 10 MeV using a $^{252}$Cf fission chamber with $^6$LiI(Eu) and Cs$_2$LiYCl$_6$:Ce (CLYC) scintillators which act as both target and detector. Neutron energies are determined from the time of flight (TOF) method using the signals from spontaneous fission and reaction product recoil. Simulations of neutron downscatter in the crystals and fission chamber bring $^6$Li(n,$伪$)t cross section values measured with the $^6$LiI(Eu) into agreement with previous experiments and evaluations, except for two resonances at 4.2 and 6.5 MeV introduced by ENDF/B-VII.1. Suspected neutron transport modeling issues cause the cross section values obtained with CLYC to be discrepant above 2 MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.03204v1-abstract-full').style.display = 'none'; document.getElementById('1709.03204v1-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> 10 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 16 Figures, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017, ISSN 0168-9002</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.06191">arXiv:1503.06191</a> <span> [<a href="https://arxiv.org/pdf/1503.06191">pdf</a>, <a href="https://arxiv.org/ps/1503.06191">ps</a>, <a href="https://arxiv.org/format/1503.06191">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.91.034323">10.1103/PhysRevC.91.034323 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Three-body correlations in the ground-state decay of 26O </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=Jones%2C+M">M. Jones</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1503.06191v1-abstract-short" style="display: inline;"> Background: Theoretical calculations have shown that the energy and angular correlations in the three-body decay of the two-neutron unbound O26 can provide information on the ground-state wave function, which has been predicted to have a dineutron configuration and 2n halo structure. Purpose: To use the experimentally measured three-body correlations to gain insight into the properties of O26, i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.06191v1-abstract-full').style.display = 'inline'; document.getElementById('1503.06191v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.06191v1-abstract-full" style="display: none;"> Background: Theoretical calculations have shown that the energy and angular correlations in the three-body decay of the two-neutron unbound O26 can provide information on the ground-state wave function, which has been predicted to have a dineutron configuration and 2n halo structure. Purpose: To use the experimentally measured three-body correlations to gain insight into the properties of O26, including the decay mechanism and ground-state resonance energy. Method: O26 was produced in a one-proton knockout reaction from F27 and the O24+n+n decay products were measured using the MoNA-Sweeper setup. The three-body correlations from the O26 ground-state resonance decay were extracted. The experimental results were compared to Monte Carlo simulations in which the resonance energy and decay mechanism were varied. Results: The measured three-body correlations were well reproduced by the Monte Carlo simulations but were not sensitive to the decay mechanism due to the experimental resolutions. However, the three-body correlations were found to be sensitive to the resonance energy of O26. A 1蟽 upper limit of 53 keV was extracted for the ground-state resonance energy of O26. Conclusions: Future attempts to measure the three-body correlations from the ground-state decay of O26 will be very challenging due to the need for a precise measurement of the O24 momentum at the reaction point in the target. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.06191v1-abstract-full').style.display = 'none'; document.getElementById('1503.06191v1-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> 20 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 91, 034323 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1501.03127">arXiv:1501.03127</a> <span> [<a href="https://arxiv.org/pdf/1501.03127">pdf</a>, <a href="https://arxiv.org/ps/1501.03127">ps</a>, <a href="https://arxiv.org/format/1501.03127">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.91.017304">10.1103/PhysRevC.91.017304 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for unbound 15Be states in the 3n+12Be channel </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kuchera%2C+A+N">A. N. Kuchera</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Jones%2C+M+D">M. D. Jones</a>, <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Peters%2C+W+A">W. A. Peters</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1501.03127v1-abstract-short" style="display: inline;"> 15Be is expected to have low-lying 3/2+ and 5/2+ states. A first search did not observe the 3/2+ [A. Spyrou et al., Phys. Rev. C 84, 044309 (2011)], however, a resonance in 15Be was populated in a second attempt and determined to be unbound with respect to 14Be by 1.8(1) MeV with a tentative spin-parity assignment of 5/2+ [J. Snyder et al., Phys. Rev. C 88, 031303(R) (2013)]. Search for the predic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.03127v1-abstract-full').style.display = 'inline'; document.getElementById('1501.03127v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1501.03127v1-abstract-full" style="display: none;"> 15Be is expected to have low-lying 3/2+ and 5/2+ states. A first search did not observe the 3/2+ [A. Spyrou et al., Phys. Rev. C 84, 044309 (2011)], however, a resonance in 15Be was populated in a second attempt and determined to be unbound with respect to 14Be by 1.8(1) MeV with a tentative spin-parity assignment of 5/2+ [J. Snyder et al., Phys. Rev. C 88, 031303(R) (2013)]. Search for the predicted 15Be 3/2+ state in the three-neutron decay channel. A two-proton removal reaction from a 55 MeV/u 17C beam was used to populate neutron-unbound states in 15Be. The two-, three-, and four-body decay energies of the 12Be + neutron(s) detected in coincidence were reconstructed using invariant mass spectroscopy. Monte Carlo simulations were performed to extract the resonance and decay properties from the observed spectra. The low-energy regions of the decay energy spectra can be described with the first excited unbound state of 14Be (E_x=1.54 MeV, E_r=0.28 MeV). Including a state in 15Be that decays through the first excited 14Be state slightly improves the fit at higher energies though the cross section is small. A 15Be component is not needed to describe the data. If the 3/2+ state in 15Be is populated, the decay by three-neutron emission through 14Be is weak, less than or equal to 11% up to 4 MeV. In the best fit, 15Be is unbound with respect to 12Be by 1.4 MeV (unbound with respect to $14Be by 2.66 MeV) with a strength of 7%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.03127v1-abstract-full').style.display = 'none'; document.getElementById('1501.03127v1-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 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 5 figures, accepted in Physical Review 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/1305.0677">arXiv:1305.0677</a> <span> [<a href="https://arxiv.org/pdf/1305.0677">pdf</a>, <a href="https://arxiv.org/format/1305.0677">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.nuclphysa.2013.05.001">10.1016/j.nuclphysa.2013.05.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a low-lying neutron-unbound state in 19C </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Badger%2C+N+S">N. S. Badger</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Bennett%2C+M">M. Bennett</a>, <a href="/search/?searchtype=author&query=Brown%2C+J">J. Brown</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Gardner%2C+M">M. Gardner</a>, <a href="/search/?searchtype=author&query=Hook%2C+E+A">E. A. Hook</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Meyer%2C+D+A">D. A. Meyer</a>, <a href="/search/?searchtype=author&query=Mosby%2C+M">M. Mosby</a>, <a href="/search/?searchtype=author&query=Rogers%2C+W+F">W. F. Rogers</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</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="1305.0677v1-abstract-short" style="display: inline;"> Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system 18C+n corresponding to a state in 19C at an excitation energy of 653(95)keV. This resonance could corre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.0677v1-abstract-full').style.display = 'inline'; document.getElementById('1305.0677v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1305.0677v1-abstract-full" style="display: none;"> Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system 18C+n corresponding to a state in 19C at an excitation energy of 653(95)keV. This resonance could correspond to the first 5/2+ state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from 20C. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.0677v1-abstract-full').style.display = 'none'; document.getElementById('1305.0677v1-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, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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 Nucl. Phys. A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1304.4507">arXiv:1304.4507</a> <span> [<a href="https://arxiv.org/pdf/1304.4507">pdf</a>, <a href="https://arxiv.org/ps/1304.4507">ps</a>, <a href="https://arxiv.org/format/1304.4507">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.nuclphysa.2013.04.004">10.1016/j.nuclphysa.2013.04.004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $^{21}$C and constraints on $^{22}$C </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Badger%2C+N+S">N. S. Badger</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Bennett%2C+M">M. Bennett</a>, <a href="/search/?searchtype=author&query=Brown%2C+J">J. Brown</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Gardner%2C+M">M. Gardner</a>, <a href="/search/?searchtype=author&query=Hinnefeld%2C+J+D">J. D. Hinnefeld</a>, <a href="/search/?searchtype=author&query=Hook%2C+E+A">E. A. Hook</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E+M">E. M. Lunderberg</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Meyer%2C+D+A">D. A. Meyer</a>, <a href="/search/?searchtype=author&query=Mosby%2C+M">M. Mosby</a>, <a href="/search/?searchtype=author&query=Peaslee%2C+G+F">G. F. Peaslee</a>, <a href="/search/?searchtype=author&query=Rogers%2C+W+F">W. F. Rogers</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1304.4507v1-abstract-short" style="display: inline;"> A search for the neutron-unbound nucleus $^{21}$C was performed via the single proton removal reaction from a beam of 22 N at 68 MeV/u. Neutrons were detected with the Modular Neutron Array (MoNA) in coincidence with $^{20}$C fragments. No evidence for a low-lying state was found, and the reconstructed $^{20}$C+n decay energy spectrum could be described with an s-wave line shape with a scattering… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.4507v1-abstract-full').style.display = 'inline'; document.getElementById('1304.4507v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1304.4507v1-abstract-full" style="display: none;"> A search for the neutron-unbound nucleus $^{21}$C was performed via the single proton removal reaction from a beam of 22 N at 68 MeV/u. Neutrons were detected with the Modular Neutron Array (MoNA) in coincidence with $^{20}$C fragments. No evidence for a low-lying state was found, and the reconstructed $^{20}$C+n decay energy spectrum could be described with an s-wave line shape with a scattering length limit of |as| < 2.8 fm, consistent with shell model predictions. A comparison with a renormalized zero-range three-body model suggests that $^{22}$C is bound by less than 70 keV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.4507v1-abstract-full').style.display = 'none'; document.getElementById('1304.4507v1-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 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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 Nuclear Physics A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1303.2617">arXiv:1303.2617</a> <span> [<a href="https://arxiv.org/pdf/1303.2617">pdf</a>, <a href="https://arxiv.org/ps/1303.2617">ps</a>, <a href="https://arxiv.org/format/1303.2617">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.110.152501">10.1103/PhysRevLett.110.152501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of two-neutron radioactivity in the decay of 26O </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Jones%2C+M">M. Jones</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Nagi%2C+T">T. Nagi</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1303.2617v1-abstract-short" style="display: inline;"> A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of 26O -> 24O+n+n was examined as it had been predicted to have an appreciable lifetime due to the unique structure of the neutron-rich oxygen isotopes. The half-life of 26O was extracted as 4.5^{+1.1}_{-1.5}(stat.) +/- 3 (sys.) ps. This corresponds to 26O having a finite lifetime at… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.2617v1-abstract-full').style.display = 'inline'; document.getElementById('1303.2617v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1303.2617v1-abstract-full" style="display: none;"> A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of 26O -> 24O+n+n was examined as it had been predicted to have an appreciable lifetime due to the unique structure of the neutron-rich oxygen isotopes. The half-life of 26O was extracted as 4.5^{+1.1}_{-1.5}(stat.) +/- 3 (sys.) ps. This corresponds to 26O having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.2617v1-abstract-full').style.display = 'none'; document.getElementById('1303.2617v1-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 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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 to Phys. Rev. Lett</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.4410">arXiv:1301.4410</a> <span> [<a href="https://arxiv.org/pdf/1301.4410">pdf</a>, <a href="https://arxiv.org/ps/1301.4410">ps</a>, <a href="https://arxiv.org/format/1301.4410">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.87.011304">10.1103/PhysRevC.87.011304 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of $^{13}$Li ground state </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Volya%2C+A">A. Volya</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Cooper%2C+N+L">N. L. Cooper</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Gade%2C+A">A. Gade</a>, <a href="/search/?searchtype=author&query=Hall%2C+C">C. Hall</a>, <a href="/search/?searchtype=author&query=Hinnefeld%2C+J">J. Hinnefeld</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Peters%2C+W+A">W. A. Peters</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1301.4410v1-abstract-short" style="display: inline;"> The ground state of neutron-rich unbound $^{13}$Li was observed for the first time in a one-proton removal reaction from $^{14}$Be at a beam energy of 53.6 MeV/u. The $^{13}$Li ground state was reconstructed from $^{11}$Li and two neutrons giving a resonance energy of 120$^{+60}_{-80}$ keV. All events involving single and double neutron interactions in the Modular Neutron Array (MoNA) were analyze… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.4410v1-abstract-full').style.display = 'inline'; document.getElementById('1301.4410v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.4410v1-abstract-full" style="display: none;"> The ground state of neutron-rich unbound $^{13}$Li was observed for the first time in a one-proton removal reaction from $^{14}$Be at a beam energy of 53.6 MeV/u. The $^{13}$Li ground state was reconstructed from $^{11}$Li and two neutrons giving a resonance energy of 120$^{+60}_{-80}$ keV. All events involving single and double neutron interactions in the Modular Neutron Array (MoNA) were analyzed, simulated, and fitted self-consistently. The three-body ($^{11}$Li+$n+n$) correlations within Jacobi coordinates showed strong dineutron characteristics. The decay energy spectrum of the intermediate $^{12}$Li system ($^{11}$Li+$n$) was described with an s-wave scattering length of greater than -4 fm, which is a smaller absolute value than reported in a previous measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.4410v1-abstract-full').style.display = 'none'; document.getElementById('1301.4410v1-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 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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 as a 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/1211.2178">arXiv:1211.2178</a> <span> [<a href="https://arxiv.org/pdf/1211.2178">pdf</a>, <a href="https://arxiv.org/format/1211.2178">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/10.5506/APhysPolB.44.543">10.5506/APhysPolB.44.543 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of Ground-State Two-Neutron Decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</a>, <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Attanayake%2C+H">H. Attanayake</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Brown%2C+B+A">B. A. Brown</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Divaratne%2C+D">D. Divaratne</a>, <a href="/search/?searchtype=author&query=Grimes%2C+S+M">S. M. Grimes</a>, <a href="/search/?searchtype=author&query=Haagsma%2C+A">A. Haagsma</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Nagi%2C+T">T. Nagi</a>, <a href="/search/?searchtype=author&query=Peaslee%2C+G+F">G. F. Peaslee</a>, <a href="/search/?searchtype=author&query=Peters%2C+W+A">W. A. Peters</a>, <a href="/search/?searchtype=author&query=Schiller%2C+A">A. Schiller</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M">M. Strongman</a>, <a href="/search/?searchtype=author&query=Volya%2C+A">A. Volya</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="1211.2178v1-abstract-short" style="display: inline;"> Neutron decay spectroscopy has become a successful tool to explore nuclear properties of nuclei with the largest neutron-to-proton ratios. Resonances in nuclei located beyond the neutron dripline are accessible by kinematic reconstruction of the decay products. The development of two-neutron detection capabilities of the Modular Neutron Array (MoNA) at NSCL has opened up the possibility to search… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1211.2178v1-abstract-full').style.display = 'inline'; document.getElementById('1211.2178v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1211.2178v1-abstract-full" style="display: none;"> Neutron decay spectroscopy has become a successful tool to explore nuclear properties of nuclei with the largest neutron-to-proton ratios. Resonances in nuclei located beyond the neutron dripline are accessible by kinematic reconstruction of the decay products. The development of two-neutron detection capabilities of the Modular Neutron Array (MoNA) at NSCL has opened up the possibility to search for unbound nuclei which decay by the emission of two neutrons. Specifically this exotic decay mode was observed in 16Be and 26O. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1211.2178v1-abstract-full').style.display = 'none'; document.getElementById('1211.2178v1-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 November, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">To be published in Acta Physica Polonica 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/1208.2969">arXiv:1208.2969</a> <span> [<a href="https://arxiv.org/pdf/1208.2969">pdf</a>, <a href="https://arxiv.org/ps/1208.2969">ps</a>, <a href="https://arxiv.org/format/1208.2969">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/10.1088/1742-6596/420/1/012052">10.1088/1742-6596/420/1/012052 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exploring the neutron dripline two neutrons at a time: The first observations of the 26O and 16Be ground state resonances </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Attanayake%2C+H">H. Attanayake</a>, <a href="/search/?searchtype=author&query=Bauman%2C+T">T. Bauman</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Brown%2C+B+A">B. A. Brown</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Divaratne%2C+D">D. Divaratne</a>, <a href="/search/?searchtype=author&query=Grimes%2C+S+M">S. M. Grimes</a>, <a href="/search/?searchtype=author&query=Haagsma%2C+A">A. Haagsma</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Nagi%2C+T">T. Nagi</a>, <a href="/search/?searchtype=author&query=Peaslee%2C+G+F">G. F. Peaslee</a>, <a href="/search/?searchtype=author&query=Peters%2C+W+A">W. A. Peters</a>, <a href="/search/?searchtype=author&query=Schiller%2C+A">A. Schiller</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</a>, <a href="/search/?searchtype=author&query=Volya%2C+A">A. Volya</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="1208.2969v1-abstract-short" style="display: inline;"> The two-neutron unbound ground state resonances of $^{26}$O and $^{16}$Be were populated using one-proton knockout reactions from $^{27}$F and $^{17}$B beams. A coincidence measurement of 3-body system (fragment + n + n) allowed for the decay energy of the unbound nuclei to be reconstructed. A low energy resonance, $<$ 200 keV, was observed for the first time in the $^{24}$O + n + n system and ass… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.2969v1-abstract-full').style.display = 'inline'; document.getElementById('1208.2969v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1208.2969v1-abstract-full" style="display: none;"> The two-neutron unbound ground state resonances of $^{26}$O and $^{16}$Be were populated using one-proton knockout reactions from $^{27}$F and $^{17}$B beams. A coincidence measurement of 3-body system (fragment + n + n) allowed for the decay energy of the unbound nuclei to be reconstructed. A low energy resonance, $<$ 200 keV, was observed for the first time in the $^{24}$O + n + n system and assigned to the ground state of $^{26}$O. The $^{16}$Be ground state resonance was observed at 1.35 MeV. The 3-body correlations of the $^{14}$Be + n + n system were compared to simulations of a phase-space, sequential, and dineutron decay. The strong correlations in the n-n system from the experimental data could only be reproduced by the dineutron decay simulation providing the first evidence for a dineutron-like decay. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.2969v1-abstract-full').style.display = 'none'; document.getElementById('1208.2969v1-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 August, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">Invited Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1203.1369">arXiv:1203.1369</a> <span> [<a href="https://arxiv.org/pdf/1203.1369">pdf</a>, <a href="https://arxiv.org/ps/1203.1369">ps</a>, <a href="https://arxiv.org/format/1203.1369">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.85.034327">10.1103/PhysRevC.85.034327 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of neutron-unbound $^{27,28}$F </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Ash%2C+S">S. Ash</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Gade%2C+A">A. Gade</a>, <a href="/search/?searchtype=author&query=Grinyer%2C+G+F">G. F. Grinyer</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+M">M. Mosby</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</a>, <a href="/search/?searchtype=author&query=Warren%2C+M">M. Warren</a>, <a href="/search/?searchtype=author&query=Weisshaar%2C+D">D. Weisshaar</a>, <a href="/search/?searchtype=author&query=Wersal%2C+A">A. Wersal</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="1203.1369v1-abstract-short" style="display: inline;"> The ground state of $^{28}$F has been observed as an unbound resonance $2\underline{2}0$ keV above the ground state of $^{27}$F. Comparison of this result with USDA/USDB shell model predictions leads to the conclusion that the $^{28}$F ground state is primarily dominated by $sd$-shell configurations. Here we present a detailed report on the experiment in which the ground state resonance of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.1369v1-abstract-full').style.display = 'inline'; document.getElementById('1203.1369v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1203.1369v1-abstract-full" style="display: none;"> The ground state of $^{28}$F has been observed as an unbound resonance $2\underline{2}0$ keV above the ground state of $^{27}$F. Comparison of this result with USDA/USDB shell model predictions leads to the conclusion that the $^{28}$F ground state is primarily dominated by $sd$-shell configurations. Here we present a detailed report on the experiment in which the ground state resonance of $^{28}$F was first observed. Additionally, we report the first observation of a neutron-unbound excited state in $^{27}$F at an excitation energy of $25\underline{0}0 (2\underline{2}0)$ keV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.1369v1-abstract-full').style.display = 'none'; document.getElementById('1203.1369v1-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 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">10 pages, 11 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/1202.3973">arXiv:1202.3973</a> <span> [<a href="https://arxiv.org/pdf/1202.3973">pdf</a>, <a href="https://arxiv.org/format/1202.3973">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.108.142503">10.1103/PhysRevLett.108.142503 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evidence for the ground-state resonance of 26O </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Lunderberg%2C+E">E. Lunderberg</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Kohley%2C+Z">Z. Kohley</a>, <a href="/search/?searchtype=author&query=Attanayake%2C+H">H. Attanayake</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Divaratne%2C+D">D. Divaratne</a>, <a href="/search/?searchtype=author&query=Grimes%2C+S+M">S. M. Grimes</a>, <a href="/search/?searchtype=author&query=Haagsma%2C+A">A. Haagsma</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Nagy%2C+T">T. Nagy</a>, <a href="/search/?searchtype=author&query=Peaslee%2C+G+F">G. F. Peaslee</a>, <a href="/search/?searchtype=author&query=Schiller%2C+A">A. Schiller</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</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="1202.3973v1-abstract-short" style="display: inline;"> Evidence for the ground state of the neutron-unbound nucleus 26O was observed for the first time in the single proton-knockout reaction from a 82 MeV/u 27F beam. Neutrons were measured in coincidence with 24O fragments. 26O was determined to be unbound by 150+50-150 keV from the observation of low-energy neutrons. This result agrees with recent shell model calculations based on microscopic two- an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.3973v1-abstract-full').style.display = 'inline'; document.getElementById('1202.3973v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1202.3973v1-abstract-full" style="display: none;"> Evidence for the ground state of the neutron-unbound nucleus 26O was observed for the first time in the single proton-knockout reaction from a 82 MeV/u 27F beam. Neutrons were measured in coincidence with 24O fragments. 26O was determined to be unbound by 150+50-150 keV from the observation of low-energy neutrons. This result agrees with recent shell model calculations based on microscopic two- and three-nucleon forces. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.3973v1-abstract-full').style.display = 'none'; document.getElementById('1202.3973v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">Accepted for Publication in Phys. Rev. Lett</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1201.1267">arXiv:1201.1267</a> <span> [<a href="https://arxiv.org/pdf/1201.1267">pdf</a>, <a href="https://arxiv.org/ps/1201.1267">ps</a>, <a href="https://arxiv.org/format/1201.1267">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.108.032501">10.1103/PhysRevLett.108.032501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exploring the Low-$Z$ Shore of the Island of Inversion at $N = 19$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Christian%2C+G">G. Christian</a>, <a href="/search/?searchtype=author&query=Frank%2C+N">N. Frank</a>, <a href="/search/?searchtype=author&query=Ash%2C+S">S. Ash</a>, <a href="/search/?searchtype=author&query=Baumann%2C+T">T. Baumann</a>, <a href="/search/?searchtype=author&query=Bazin%2C+D">D. Bazin</a>, <a href="/search/?searchtype=author&query=Brown%2C+J">J. Brown</a>, <a href="/search/?searchtype=author&query=DeYoung%2C+P+A">P. A. DeYoung</a>, <a href="/search/?searchtype=author&query=Finck%2C+J+E">J. E. Finck</a>, <a href="/search/?searchtype=author&query=Gade%2C+A">A. Gade</a>, <a href="/search/?searchtype=author&query=Grinyer%2C+G+F">G. F. Grinyer</a>, <a href="/search/?searchtype=author&query=Grovom%2C+A">A. Grovom</a>, <a href="/search/?searchtype=author&query=Hinnefeld%2C+J+D">J. D. Hinnefeld</a>, <a href="/search/?searchtype=author&query=Lunderberg%2C+E+M">E. M. Lunderberg</a>, <a href="/search/?searchtype=author&query=Luther%2C+B">B. Luther</a>, <a href="/search/?searchtype=author&query=Mosby%2C+M">M. Mosby</a>, <a href="/search/?searchtype=author&query=Mosby%2C+S">S. Mosby</a>, <a href="/search/?searchtype=author&query=Nagi%2C+T">T. Nagi</a>, <a href="/search/?searchtype=author&query=Peaslee%2C+G+F">G. F. Peaslee</a>, <a href="/search/?searchtype=author&query=Rogers%2C+W+F">W. F. Rogers</a>, <a href="/search/?searchtype=author&query=Smith%2C+J+K">J. K. Smith</a>, <a href="/search/?searchtype=author&query=Snyder%2C+J">J. Snyder</a>, <a href="/search/?searchtype=author&query=Spyrou%2C+A">A. Spyrou</a>, <a href="/search/?searchtype=author&query=Strongman%2C+M+J">M. J. Strongman</a>, <a href="/search/?searchtype=author&query=Thoennessen%2C+M">M. Thoennessen</a>, <a href="/search/?searchtype=author&query=Warren%2C+M">M. Warren</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="1201.1267v1-abstract-short" style="display: inline;"> The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound $^{28}\textrm{F},$ determined to be a resonance in the $^{27}\textrm{F} + n$ continuum at $2\underline{2}0 (\underline{5}0)$ keV. States in $^{28}\textrm{F}$ were populated by the reactions of a 62 MeV/u $^{29}\textrm{Ne}$ beam impinging on a 288 $\textrm{mg/cm}^2$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.1267v1-abstract-full').style.display = 'inline'; document.getElementById('1201.1267v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1201.1267v1-abstract-full" style="display: none;"> The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound $^{28}\textrm{F},$ determined to be a resonance in the $^{27}\textrm{F} + n$ continuum at $2\underline{2}0 (\underline{5}0)$ keV. States in $^{28}\textrm{F}$ were populated by the reactions of a 62 MeV/u $^{29}\textrm{Ne}$ beam impinging on a 288 $\textrm{mg/cm}^2$ beryllium target. The measured $^{28}\textrm{F}$ ground state energy is in good agreement with USDA/USDB shell model predictions, indicating that $pf$ shell intruder configurations play only a small role in the ground state structure of $^{28}\textrm{F}$ and establishing a low-$Z$ boundary of the island of inversion for N=19 isotones. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.1267v1-abstract-full').style.display = 'none'; document.getElementById('1201.1267v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 4 figures, to be published in Phys. Rev. Lett</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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