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Destruction of the cosmic γ -ray emitter $^{26}$Al in massive stars: Study of the key $^{26}$Al (n,α) reaction

Lederer-Woods, C.; Woods, P. J.; Davinson, T.; Estrade, A.; Heyse, J.; Kahl, D.; Lonsdale, S. J.; Paradela, C.; Schillebeeckx, P.; Aberle, O.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Bacak, M.; Balibrea, J.; Barbagallo, M.; Bečvář, F.; Berthoumieux, E.; Billowes, J.; ... mehr


Neutron destruction reactions of the cosmic γ-ray emitter $^{26}$Al are of importance to determine the amount of $^{26}$Al ejected into our galaxy by supernova explosions and for $^{26}$Al production in asymptotic giant branch stars. We performed a new measurement of the $^{26}$Al(n,α) reaction up to 160-keV neutron energy at the neutron time-of-flight facilities n_TOF at CERN and GELINA at EC-JRC. We provide strengths for ten resonances, six of them for the first time. We use our data to calculate astrophysical reactivities for stellar temperatures up to 0.7 GK. Our results resolve a discrepancy between the two previous direct measurements of this reaction, and indicate higher stellar destruction rates than the most recently recommended reactivity.

Verlagsausgabe §
DOI: 10.5445/IR/1000138928
Veröffentlicht am 13.10.2021
DOI: 10.1103/PhysRevC.104.L032803
Zitationen: 4
Web of Science
Zitationen: 7
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT Zukunftscampus (CAMPUS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2469-9985
KITopen-ID: 1000138928
Erschienen in Physical Review C
Band 104
Heft 3
Seiten Art.-Nr.: L032803
Nachgewiesen in Scopus
Web of Science
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