Fougeres, Chloe, Santos, Francois de Oliveira, Jose, Jordi, Michelagnoli, Caterina, Clement, Emmanuel, Kim, Yung Hee, Lemasson, Antoine, Guimaraes, Valdir, Barrientos, Diego, Bemmerer, Daniel et al (show 52 more authors)
(2023)
Search for Na-22 in novae supported by a novel method for measuring femtosecond nuclear lifetimes.
NATURE COMMUNICATIONS, 14 (1).
4536-.
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Search for sup22supNa in novae supported by a novel method for measuring femtosecond nuclear lifetimes.pdf - Open Access published version Download (1MB) | Preview |
Abstract
Classical novae are thermonuclear explosions in stellar binary systems, and important sources of <sup>26</sup>Al and <sup>22</sup>Na. While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, <sup>22</sup>Na remains untraceable. Its half-life (2.6 yr) would allow the observation of its 1.275 MeV γ-ray line from a cosmic source. However, the prediction of such an observation requires good knowledge of its nucleosynthesis. The <sup>22</sup>Na(p, γ)<sup>23</sup>Mg reaction remains the only source of large uncertainty about the amount of <sup>22</sup>Na ejected. Its rate is dominated by a single resonance on the short-lived state at 7785.0(7) keV in <sup>23</sup>Mg. Here, we propose a combined analysis of particle-particle correlations and velocity-difference profiles to measure femtosecond nuclear lifetimes. The application of this method to the study of the <sup>23</sup>Mg states, places strong limits on the amount of <sup>22</sup>Na produced in novae and constrains its detectability with future space-borne observatories.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 02 Oct 2023 09:47 |
| Last Modified: | 02 Oct 2023 09:47 |
| DOI: | 10.1038/s41467-023-40121-3 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3173265 |
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