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.
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Woods, P. J.
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Davinson, T.
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Estrade, A.
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Heyse, J.
•
Kahl, D.
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Lonsdale, S. J.
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Paradela, C.
•
Schillebeeckx, P.
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Aberle, O.
•
Amaducci, S.
•
Andrzejewski, J.
•
Audouin, L.
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Bacak, M.
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Balibrea, J.
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Barbagallo, M.
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Bečvář, F.
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Berthoumieux, E.
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Billowes, J.
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Bosnar, D.
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Brown, A.
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Caamaño, M.
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Calviño, F.
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Calviani, M.
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Cano-Ott, D.
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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.
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Dressler, R.
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Dupont, E.
•
Durán, I.
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Fernández-Domínguez, B.
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Ferrari, A.
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Ferreira, P.
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Ferrer, F. J.
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Finocchiaro, P.
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Furman, V.
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Göbel, K.
•
García, A. R.
•
Gawlik, A.
•
Gilardoni, S.
•
Glodariu, T.
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Gonçalves, I. F.
•
González-Romero, E.
•
Griesmayer, E.
•
Guerrero, C.
•
Gunsing, F.
•
Harada, H.
•
Heinitz, S.
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Jenkins, D. G.
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Jericha, E.
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Käppeler, F.
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Kadi, Y.
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Kalamara, A.
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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.
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Kurtulgil, D.
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Leal-Cidoncha, E.
•
Leeb, H.
•
Lerendegui-Marco, J.
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Lo Meo, S.
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Macina, D.
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Manna, A.
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Marganiec, J.
•
Martínez, T.
•
Masi, A.
•
Massimi, C.
•
Mastinu, P.
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Mastromarco, M.
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Maugeri, E. A.
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Mazzone, A.
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Mendoza, E.
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Mengoni, A.
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Milazzo, P. M.
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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.
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Radeck, D.
•
Rauscher, T.
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
Issn Identifier
2469-9985
Rights
open.access
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