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value="">Relevance</option></select> </span> </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/2406.04771">arXiv:2406.04771</a> <span> [<a href="https://arxiv.org/pdf/2406.04771">pdf</a>, <a href="https://arxiv.org/format/2406.04771">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.110.L031301">10.1103/PhysRevC.110.L031301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation and spectroscopy of proton-unbound nucleus $^{21}$Al </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kostyleva%2C+D">D. Kostyleva</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+-">X. -D. Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Mukha%2C+I">I. Mukha</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Bajzek%2C+M">M. Bajzek</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemny%2C+A+A">A. A. Ciemny</a>, <a href="/search/nucl-ex?searchtype=author&query=Cortina-Gil%2C+D">D. Cortina-Gil</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Due%C3%B1as%2C+J+A">J. A. Due帽as</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrad%C3%A9%2C+A">A. Estrad茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Camacho%2C+J">J. G贸mez-Camacho</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Grigorenko%2C+L+V">L. V. Grigorenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Korsheninnikov%2C+A+A">A. A. Korsheninnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a> , et al. (29 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="2406.04771v1-abstract-short" style="display: inline;"> We report on the observation of previously-unknown isotope $^{21}$Al, the first unbound aluminum isotope located beyond the proton dripline. The $^{21}$Al nucleus decays by one-proton (1p) emission, and its in-flight decays were detected by tracking trajectories of all decay products with micro-strip silicon detectors. The 1p-emission processes were studied by analyses of the measured angular corr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.04771v1-abstract-full').style.display = 'inline'; document.getElementById('2406.04771v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.04771v1-abstract-full" style="display: none;"> We report on the observation of previously-unknown isotope $^{21}$Al, the first unbound aluminum isotope located beyond the proton dripline. The $^{21}$Al nucleus decays by one-proton (1p) emission, and its in-flight decays were detected by tracking trajectories of all decay products with micro-strip silicon detectors. The 1p-emission processes were studied by analyses of the measured angular correlations of decay products $^{20}$Mg+p. The 1p-decay energies of ground and low-lying excited states of $^{21}$Al, its mass excess and proton separation energy value $S_p$=$-1.1(1)$ MeV were determined. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.04771v1-abstract-full').style.display = 'none'; document.getElementById('2406.04771v1-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 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">6 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review C 110, L031301 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.08154">arXiv:1905.08154</a> <span> [<a href="https://arxiv.org/pdf/1905.08154">pdf</a>, <a href="https://arxiv.org/ps/1905.08154">ps</a>, <a href="https://arxiv.org/format/1905.08154">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.123.092502">10.1103/PhysRevLett.123.092502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Towards the Limits of Existence of Nuclear Structure: Observation and First spectroscopy of the Isotope $^{31}$K by measuring its three-proton Decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kostyleva%2C+D">D. Kostyleva</a>, <a href="/search/nucl-ex?searchtype=author&query=Mukha%2C+I">I. Mukha</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemny%2C+A+A">A. A. Ciemny</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Due%C3%B1as%2C+J+A">J. A. Due帽as</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunin%2C+V">V. Dunin</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrad%C3%A9%2C+A">A. Estrad茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Grigorenko%2C+L+V">L. V. Grigorenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a>, <a href="/search/nucl-ex?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Marquinez-Dur%C3%A1n%2C+G">G. Marquinez-Dur谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Martel%2C+I">I. Martel</a> , et al. (23 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1905.08154v1-abstract-short" style="display: inline;"> The most-remote from stability isotope $^{31}$K, which is located four atomic mass units beyond the proton drip line, has been observed. It is unbound in respect to three-proton (${3p}$) emission, and its decays have been detected in flight by measuring trajectories of all decay products using micro-strip detectors. The $3p$-emission processes have been studied by means of angular correlations… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.08154v1-abstract-full').style.display = 'inline'; document.getElementById('1905.08154v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.08154v1-abstract-full" style="display: none;"> The most-remote from stability isotope $^{31}$K, which is located four atomic mass units beyond the proton drip line, has been observed. It is unbound in respect to three-proton (${3p}$) emission, and its decays have been detected in flight by measuring trajectories of all decay products using micro-strip detectors. The $3p$-emission processes have been studied by means of angular correlations $^{28}$S+3$p$ and the respective decay vertexes. The energies of the previously-unknown ground and excited states of $^{31}$K have been determined. This provides its $3p$ separation-energy value $S_{3p}$ of $-4.6(2)$ MeV. Upper half-life limits of 10 ps of the observed $^{31}$K states have been derived from distributions of the measured decay vertexes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.08154v1-abstract-full').style.display = 'none'; document.getElementById('1905.08154v1-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 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 123, 092502 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.01887">arXiv:1804.01887</a> <span> [<a href="https://arxiv.org/pdf/1804.01887">pdf</a>, <a href="https://arxiv.org/ps/1804.01887">ps</a>, <a href="https://arxiv.org/format/1804.01887">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.98.064309">10.1103/PhysRevC.98.064309 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Deep excursion beyond the proton dripline. II. Toward the limits of existence of nuclear structure </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Grigorenko%2C+L+V">L. V. Grigorenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Mukha%2C+I">I. Mukha</a>, <a href="/search/nucl-ex?searchtype=author&query=Kostyleva%2C+D">D. Kostyleva</a>, <a href="/search/nucl-ex?searchtype=author&query=Scheidenberger%2C+C">C. Scheidenberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemny%2C+A+A">A. A. Ciemny</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Due%C3%B1as%2C+J+A">J. A. Due帽as</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunin%2C+V">V. Dunin</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrad%C3%A9%2C+A">A. Estrad茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a>, <a href="/search/nucl-ex?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Marquinez-Dur%C3%A1n%2C+G">G. Marquinez-Dur谩n</a> , et al. (25 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="1804.01887v5-abstract-short" style="display: inline;"> Prospects of experimental studies of argon and chlorine isotopes located far beyond the proton dripline are studied by using systematics and cluster models. The deviations from the widespread systematics observed in $^{28,29}$Cl and $^{29,30}$Ar have been theoretically substantiated, and analogous deviations predicted for the lighter chlorine and argon isotopes. The limits of nuclear structure exi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.01887v5-abstract-full').style.display = 'inline'; document.getElementById('1804.01887v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.01887v5-abstract-full" style="display: none;"> Prospects of experimental studies of argon and chlorine isotopes located far beyond the proton dripline are studied by using systematics and cluster models. The deviations from the widespread systematics observed in $^{28,29}$Cl and $^{29,30}$Ar have been theoretically substantiated, and analogous deviations predicted for the lighter chlorine and argon isotopes. The limits of nuclear structure existence are predicted for Ar and Cl isotopic chains, with $^{26}$Ar and $^{25}$Cl found to be the lightest sufficiently long-living nuclear systems. By simultaneous measurements of protons and $纬$-rays following decays of such systems as well as their $尾$-delayed emission, an interesting synergy effect may be achieved, which is demonstrated by the example of $^{30}$Cl and $^{31}$Ar ground state studies. Such synergy effect may be provided by the new EXPERT setup (EXotic Particle Emission and Radioactivity by Tracking), being operated inside the fragment separator and spectrometer facility at GSI, Darmstadt. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.01887v5-abstract-full').style.display = 'none'; document.getElementById('1804.01887v5-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 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">10 pages, 9 figures. Chapter added, language and some figures corrected</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 98, 064309 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.10951">arXiv:1803.10951</a> <span> [<a href="https://arxiv.org/pdf/1803.10951">pdf</a>, <a href="https://arxiv.org/ps/1803.10951">ps</a>, <a href="https://arxiv.org/format/1803.10951">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.98.064308">10.1103/PhysRevC.98.064308 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Deep excursion beyond the proton dripline. I. Argon and chlorine isotope chains </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mukha%2C+I">I. Mukha</a>, <a href="/search/nucl-ex?searchtype=author&query=Grigorenko%2C+L+V">L. V. Grigorenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kostyleva%2C+D">D. Kostyleva</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemny%2C+A+A">A. A. Ciemny</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Due%C3%B1as%2C+J+A">J. A. Due帽as</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunin%2C+V">V. Dunin</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrad%C3%A9%2C+A">A. Estrad茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a>, <a href="/search/nucl-ex?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Marquinez-Dur%C3%A1n%2C+G">G. Marquinez-Dur谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Martel%2C+I">I. Martel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mazzocchi%2C+C">C. Mazzocchi</a> , et al. (23 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.10951v5-abstract-short" style="display: inline;"> The proton-unbound argon and chlorine isotopes have been studied by measuring trajectories of their decay-in-flight products by using a tracking technique with micro-strip detectors. The proton ($1p$) and two-proton ($2p$) emission processes have been detected in the measured angular correlations "heavy-fragment"+$p$ and "heavy-fragment"+$p$+$p$, respectively. The ground states of the previously u… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.10951v5-abstract-full').style.display = 'inline'; document.getElementById('1803.10951v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.10951v5-abstract-full" style="display: none;"> The proton-unbound argon and chlorine isotopes have been studied by measuring trajectories of their decay-in-flight products by using a tracking technique with micro-strip detectors. The proton ($1p$) and two-proton ($2p$) emission processes have been detected in the measured angular correlations "heavy-fragment"+$p$ and "heavy-fragment"+$p$+$p$, respectively. The ground states of the previously unknown isotopes $^{30}$Cl and $^{28}$Cl have been observed for the first time, providing the $1p$-separation energies $S_p$ of $-0.48(2)$ and $-1.60(8)$ MeV, respectively. The relevant systematics of $1p$ and $2p$ separations energies have been studied theoretically in the core+$p$ and core+$p$+$p$ cluster models. The first-time observed excited states of $^{31}$Ar allow to infer the $2p$-separation energy $S_{2p}$ of 6(34) keV for its ground state. The first-time observed state in $^{29}$Ar with $S_{2p} = -5.50(18)$ MeV can be identified either as a ground or an excited state according to different systematics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.10951v5-abstract-full').style.display = 'none'; document.getElementById('1803.10951v5-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 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 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">13 pages, 14 figures. Name changed, some affiliations changed and figures corrections added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 98, 064308 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.05501">arXiv:1710.05501</a> <span> [<a href="https://arxiv.org/pdf/1710.05501">pdf</a>, <a href="https://arxiv.org/ps/1710.05501">ps</a>, <a href="https://arxiv.org/format/1710.05501">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.97.034305">10.1103/PhysRevC.97.034305 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of excited states of unbound nuclei $^{30}$Ar and $^{29}$Cl </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+-">X. -D. Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Mukha%2C+I">I. Mukha</a>, <a href="/search/nucl-ex?searchtype=author&query=Grigorenko%2C+L+V">L. V. Grigorenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Scheidenberger%2C+C">C. Scheidenberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudoba%2C+V">V. Chudoba</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciemny%2C+A+A">A. A. Ciemny</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Du%C3%A9nas-D%C3%ADaz%2C+J">J. Du茅nas-D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunin%2C+V">V. Dunin</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrad%C3%A9%2C+A">A. Estrad茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=Golubkova%2C+T+A">T. A. Golubkova</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a>, <a href="/search/nucl-ex?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a> , et al. (23 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.05501v1-abstract-short" style="display: inline;"> Several states of proton-unbound isotopes $^{30}$Ar and $^{29}$Cl were investigated by measuring their in-flight decay products, $^{28}$S+proton+proton and $^{28}$S+proton, respectively. A refined analysis of $^{28}$S-proton angular correlations indicates that the ground state of $^{30}$Ar is located at $2.45^{+0.05}_{-0.10}$ MeV above the two-proton emission threshold. The theoretical investigati… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05501v1-abstract-full').style.display = 'inline'; document.getElementById('1710.05501v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.05501v1-abstract-full" style="display: none;"> Several states of proton-unbound isotopes $^{30}$Ar and $^{29}$Cl were investigated by measuring their in-flight decay products, $^{28}$S+proton+proton and $^{28}$S+proton, respectively. A refined analysis of $^{28}$S-proton angular correlations indicates that the ground state of $^{30}$Ar is located at $2.45^{+0.05}_{-0.10}$ MeV above the two-proton emission threshold. The theoretical investigation of the $^{30}$Ar ground state decay demonstrates that its mechanism has the transition dynamics with a surprisingly strong sensitivity of the correlation patterns of the decay products to the two-proton decay energy of the $^{30}$Ar ground state and the one-proton decay energy as well as the one-proton decay width of the $^{29}$Cl ground state. The comparison of the experimental $^{28}$S-proton angular correlations with those resulting from Monte Carlo simulations of the detector response illustrates that other observed $^{30}$Ar excited states decay by sequential emission of protons via intermediate resonances in $^{29}$Cl. Based on the findings, the decay schemes of the observed states in $^{30}$Ar and $^{29}$Cl were constructed. For calibration purposes and for checking the performance of the experimental setup, decays of the previously-known states of a two-proton emitter $^{19}$Mg were remeasured. Evidences for one new excited state in $^{19}$Mg and two unknown states in $^{18}$Na were found. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05501v1-abstract-full').style.display = 'none'; document.getElementById('1710.05501v1-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 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">17 pages, 16 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, 034305 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.07990">arXiv:1505.07990</a> <span> [<a href="https://arxiv.org/pdf/1505.07990">pdf</a>, <a href="https://arxiv.org/format/1505.07990">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.91.064309">10.1103/PhysRevC.91.064309 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> \b{eta}-delayed three-proton decay of 31Ar </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lis%2C+A+A">A. A. Lis</a>, <a href="/search/nucl-ex?searchtype=author&query=Mazzocchi%2C+C">C. Mazzocchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Dominik%2C+W">W. Dominik</a>, <a href="/search/nucl-ex?searchtype=author&query=Janas%2C+Z">Z. Janas</a>, <a href="/search/nucl-ex?searchtype=author&query=Pf%C3%BCtzner%2C+M">M. Pf眉tzner</a>, <a href="/search/nucl-ex?searchtype=author&query=Pomorski%2C+M">M. Pomorski</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+L">L. Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Baraeva%2C+S">S. Baraeva</a>, <a href="/search/nucl-ex?searchtype=author&query=Casarejos%2C+E">E. Casarejos</a>, <a href="/search/nucl-ex?searchtype=author&query=Du%C3%A9nas-D%C3%ADaz%2C+J">J. Du茅nas-D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunin%2C+V">V. Dunin</a>, <a href="/search/nucl-ex?searchtype=author&query=Espino%2C+J+M">J. M. Espino</a>, <a href="/search/nucl-ex?searchtype=author&query=Estrade%2C+A">A. Estrade</a>, <a href="/search/nucl-ex?searchtype=author&query=Farinon%2C+F">F. Farinon</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomichev%2C+A">A. Fomichev</a>, <a href="/search/nucl-ex?searchtype=author&query=Geissel%2C+H">H. Geissel</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A">A. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Kami%C5%84ski%2C+G">G. Kami艅ski</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+O">O. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kn%C3%B6bel%2C+R">R. Kn枚bel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krupko%2C+S">S. Krupko</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuich%2C+M">M. Kuich</a>, <a href="/search/nucl-ex?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Marquinez-Dur%C3%A1n%2C+G">G. Marquinez-Dur谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Martel%2C+I">I. Martel</a> , et al. (16 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="1505.07990v1-abstract-short" style="display: inline;"> The beta decay of 31Ar, produced by fragmentation of a 36Ar beam at 880 MeV/nucleon, was investigated. Identified ions of 31Ar were stopped in a gaseous time projection chamber with optical readout allowing to record decay events with emission of protons. In addition to \b{eta}-delayed emission of one and two protons we have clearly observed the beta-delayed three-proton branch. The branching rati… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.07990v1-abstract-full').style.display = 'inline'; document.getElementById('1505.07990v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.07990v1-abstract-full" style="display: none;"> The beta decay of 31Ar, produced by fragmentation of a 36Ar beam at 880 MeV/nucleon, was investigated. Identified ions of 31Ar were stopped in a gaseous time projection chamber with optical readout allowing to record decay events with emission of protons. In addition to \b{eta}-delayed emission of one and two protons we have clearly observed the beta-delayed three-proton branch. The branching ratio for this channel in 31Ar is found to be 0.07(2)%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.07990v1-abstract-full').style.display = 'none'; document.getElementById('1505.07990v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">5 pages, 3 figures, submitted to Physical Rev. C</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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