Single neutron transfer on Ne-23 and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts
- NázevTitle
- Single neutron transfer on Ne-23 and its relevance for the pathway of nucleosynthesis in astrophysical X-ray burstsSingle neutron transfer on Ne-23 and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Lotay, J. Henderson, W. N. Catford, F. A. Ali, S. Bhattacharjee
- Klíčová slovaKeywords
- particle states, rp-process, proton, Nuclei, MODEL
- DOIDOI
- 10.1016/j.physletb.2022.137361
- Časopis / citaceJournal / citation
- Physics Letters B 833, 137361 (2022) · ISSN 0370-2693
- RokYear
- 2022
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
- CitovánoCited by
- 5 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://www.sciencedirect.com/science/article/pii/S0370269322004956/pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
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.
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.