Single neutron transfer on Ne-23 and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F22%3A00364062" target="_blank" >RIV/68407700:21670/22:00364062 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.physletb.2022.137361" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137361</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2022.137361" target="_blank" >10.1016/j.physletb.2022.137361</a>

Result language
angličtina
Original language name
Single neutron transfer on Ne-23 and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts
Original language description
We present new experimental measurements of resonance strengths in the astrophysical Al-23(p, gamma)Si-24 reaction, constraining the pathway of nucleosynthesis beyond Mg-22 in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d, p) reaction using a radioactive beam of Ne-23 to explore levels in Ne-24, the mirror analog of Si-24. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of similar to 20%. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key l = 0 resonance at E-r = 157 keV, in the astrophysical Al-23(p, gamma) reaction, by a factor of 4. Our results show that the Mg-22(p, gamma)Al-23(p, gamma) pathway dominates over the competing Mg-22(alpha, p) reaction in all but the most energetic X-ray burster events (T > 0.85 GK), significantly affecting energy production and the preservation of hydrogen fuel. (C) 2022 The Author(s). Published by Elsevier B.V.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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