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

Journal
Date Issued
2021
Author(s)
Lederer-Woods, C.
•
Woods, P. J.
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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.
•
Bosnar, D.
•
Brown, A.
•
Caamaño, M.
•
Calviño, F.
•
Calviani, M.
•
Cano-Ott, D.
•
Cardella, R.
•
Casanovas, A.
•
Cerutti, F.
•
Chen, Y. H.
•
Chiaveri, E.
•
Colonna, N.
•
Cortés, G.
•
Cortés-Giraldo, M. A.
•
Cosentino, L.
•
•
Damone, L. A.
•
Diakaki, M.
•
Domingo-Pardo, C.
•
Dressler, R.
•
Dupont, E.
•
Durán, I.
•
Fernández-Domínguez, B.
•
Ferrari, A.
•
Ferreira, P.
•
Ferrer, F. J.
•
Finocchiaro, P.
•
Furman, V.
•
Göbel, K.
•
García, A. R.
•
Gawlik, A.
•
Gilardoni, S.
•
Glodariu, T.
•
Gonçalves, I. F.
•
González-Romero, E.
•
Griesmayer, E.
•
Guerrero, C.
•
Gunsing, F.
•
Harada, H.
•
Heinitz, S.
•
Jenkins, D. G.
•
Jericha, E.
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Käppeler, F.
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Kadi, Y.
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Kalamara, A.
•
Kavrigin, P.
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Kimura, A.
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Kivel, N.
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Kokkoris, M.
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Krtička, M.
•
Kurtulgil, D.
•
Leal-Cidoncha, E.
•
Leeb, H.
•
Lerendegui-Marco, J.
•
Lo Meo, S.
•
Macina, D.
•
Manna, A.
•
Marganiec, J.
•
Martínez, T.
•
Masi, A.
•
Massimi, C.
•
Mastinu, P.
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Mastromarco, M.
•
Maugeri, E. A.
•
Mazzone, A.
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Mendoza, E.
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Mengoni, A.
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Milazzo, P. M.
•
Mingrone, F.
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Musumarra, A.
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Negret, A.
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Nolte, R.
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Oprea, A.
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Patronis, N.
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Pavlik, A.
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Perkowski, J.
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Porras, I.
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Praena, J.
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Quesada, J. M.
•
Radeck, D.
•
Rauscher, T.
DOI
Abstract
Neutron destruction reactions of the cosmic γ-ray emitter Al26 are of importance to determine the amount of Al26 ejected into our galaxy by supernova explosions and for Al26 production in asymptotic giant branch stars. We performed a new measurement of the Al26(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.
Volume
104
Issue
3
Uri
Url
Issn Identifier
2469-9985
Rights
open.access
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