Lotay, G, Henderson, J, Catford, WN, Ali, FA, Berean, J, Bernier, N, Bhattacharjee, SS, Bowry, M, Caballero-Folch, R, Davids, B et al (show 25 more authors)
(2022)
Single neutron transfer on <SUP>23</SUP>Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts.
PHYSICS LETTERS B, 833.
p. 137361.
Abstract
We present new experimental measurements of resonance strengths in the astrophysical 23Al(p,γ)24Si reaction, constraining the pathway of nucleosynthesis beyond 22Mg in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d,p) reaction using a radioactive beam of 23Ne to explore levels in 24Ne, the mirror analog of 24Si. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of ∼20%. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key ℓ = 0 resonance at Er = 157 keV, in the astrophysical 23Al(p,γ) reaction, by a factor of 4. Our results show that the 22Mg(p,γ)23Al(p,γ) pathway dominates over the competing 22Mg(α,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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 7 Affordable and Clean Energy |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 14 Mar 2023 15:57 |
| Last Modified: | 17 Mar 2024 15:03 |
| DOI: | 10.1016/j.physletb.2022.137361 |
| Open Access URL: | https://doi.org/10.1016/j.physletb.2022.137361 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3169069 |
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