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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.04089">arXiv:2311.04089</a> <span> [<a href="https://arxiv.org/pdf/2311.04089">pdf</a>, <a href="https://arxiv.org/format/2311.04089">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> </div> </div> <p class="title is-5 mathjax"> First measurement of the low-energy direct capture in 20Ne(p, 纬)21Na and improved energy and strength of the Ecm = 368 keV resonance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Masha%2C+E">E. Masha</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbieri%2C+L">L. Barbieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Skowronski%2C+J">J. Skowronski</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliotta%2C+M">M. Aliotta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ananna%2C+C">C. Ananna</a>, <a href="/search/nucl-ex?searchtype=author&query=Barile%2C+F">F. Barile</a>, <a href="/search/nucl-ex?searchtype=author&query=Bemmerer%2C+D">D. Bemmerer</a>, <a href="/search/nucl-ex?searchtype=author&query=Best%2C+A">A. Best</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeltzig%2C+A">A. Boeltzig</a>, <a href="/search/nucl-ex?searchtype=author&query=Broggini%2C+C">C. Broggini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruno%2C+C+G">C. G. Bruno</a>, <a href="/search/nucl-ex?searchtype=author&query=Caciolli%2C+A">A. Caciolli</a>, <a href="/search/nucl-ex?searchtype=author&query=Campostrini%2C+M">M. Campostrini</a>, <a href="/search/nucl-ex?searchtype=author&query=Casaburo%2C+F">F. Casaburo</a>, <a href="/search/nucl-ex?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciani%2C+G+F">G. F. Ciani</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciapponi%2C+A">A. Ciapponi</a>, <a href="/search/nucl-ex?searchtype=author&query=Colombetti%2C+P">P. Colombetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Compagnucci%2C+A">A. Compagnucci</a>, <a href="/search/nucl-ex?searchtype=author&query=Corvisiero%2C+P">P. Corvisiero</a>, <a href="/search/nucl-ex?searchtype=author&query=Csedreki%2C+L">L. Csedreki</a>, <a href="/search/nucl-ex?searchtype=author&query=Davinson%2C+T">T. Davinson</a>, <a href="/search/nucl-ex?searchtype=author&query=Depalo%2C+R">R. Depalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Leva%2C+A">A. Di Leva</a>, <a href="/search/nucl-ex?searchtype=author&query=Elekes%2C+Z">Z. Elekes</a> , et al. (26 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.04089v1-abstract-short" style="display: inline;"> The $\mathrm{^{20}Ne(p, 纬)^{21}Na}$ reaction is the slowest in the NeNa cycle and directly affects the abundances of the Ne and Na isotopes in a variety of astrophysical sites. Here we report the measurement of its direct capture contribution, for the first time below $E\rm_{cm} = 352$~keV, and of the contribution from the $E^{\rm }_{cm} = 368$~keV resonance, which dominates the reaction rate at… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.04089v1-abstract-full').style.display = 'inline'; document.getElementById('2311.04089v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.04089v1-abstract-full" style="display: none;"> The $\mathrm{^{20}Ne(p, 纬)^{21}Na}$ reaction is the slowest in the NeNa cycle and directly affects the abundances of the Ne and Na isotopes in a variety of astrophysical sites. Here we report the measurement of its direct capture contribution, for the first time below $E\rm_{cm} = 352$~keV, and of the contribution from the $E^{\rm }_{cm} = 368$~keV resonance, which dominates the reaction rate at $T=0.03-1.00$~GK. The experiment was performed deep underground at the Laboratory for Underground Nuclear Astrophysics, using a high-intensity proton beam and a windowless neon gas target. Prompt $纬$ rays from the reaction were detected with two high-purity germanium detectors. We obtain a resonance strength $蠅纬~=~(0.112 \pm 0.002_{\rm stat}~\pm~0.005_{\rm sys})$~meV, with an uncertainty a factor of $3$ smaller than previous values. Our revised reaction rate is 20\% lower than previously adopted at $T < 0.1$~GK and agrees with previous estimates at temperatures $T \geq 0.1$~GK. Initial astrophysical implications are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.04089v1-abstract-full').style.display = 'none'; document.getElementById('2311.04089v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures, accepted to PRC (letter)</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" 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