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

In: Physical Review C, Vol. 104, No. 3, L032803, 22.09.2021.

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@article{74f544a10a0d49e9b2d814bfa017abc9,
title = "Destruction of the cosmic γ -ray emitter Al 26 in massive stars: Study of the key Al 26 (n,α) reaction",
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.",
author = "{n_TOF Collaboration} and C. Lederer-Woods and Woods, {P. J.} and T. Davinson and A. Estrade and J. Heyse and D. Kahl and Lonsdale, {S. J.} and C. Paradela and P. Schillebeeckx and O. Aberle and S. Amaducci and J. Andrzejewski and L. Audouin and M. Bacak and J. Balibrea and M. Barbagallo and F. Be{\v c}v{\'a}{\v r} and E. Berthoumieux and J. Billowes and D. Bosnar and A. Brown and M. Caama{\~n}o and F. Calvi{\~n}o and M. Calviani and D. Cano-Ott and R. Cardella and A. Casanovas and F. Cerutti and Chen, {Y. H.} and E. Chiaveri and N. Colonna and G. Cort{\'e}s and Cort{\'e}s-Giraldo, {M. A.} and L. Cosentino and S. Cristallo and Damone, {L. A.} and M. Diakaki and C. Domingo-Pardo and R. Dressler and E. Dupont and I. Dur{\'a}n and B. Fern{\'a}ndez-Dom{\'i}nguez and A. Ferrari and P. Ferreira and Ferrer, {F. J.} and P. Finocchiaro and V. Furman and K. G{\"o}bel and Garc{\'i}a, {A. R.} and T. Rauscher",
note = "Funding Information: We thank P. Black (University of Edinburgh) for support in design and construction of the detection system and P. Morrall (Daresbury Laboratory) for production of the B and LiF reference samples. This Letter was supported by the Austrian Science Fund (FWF), Project No. J3503, by JRC-IRMM through the EUFRAT Program, by the U.K. Science and Technologies Facilities Council (STFC), Projects No. ST/L005824/1 and No. ST/M006085/1, the European Research Council ERC-2015-STG Grant No. 677497, and the Cost Action “ChETEC” (Grant No. CA16117). Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2021",
month = sep,
day = "22",
doi = "10.1103/PhysRevC.104.L032803",
language = "English",
volume = "104",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Destruction of the cosmic γ -ray emitter Al 26 in massive stars

T2 - Study of the key Al 26 (n,α) reaction

AU - n_TOF Collaboration

AU - Lederer-Woods, C.

AU - Woods, P. J.

AU - Davinson, T.

AU - Estrade, A.

AU - Heyse, J.

AU - Kahl, D.

AU - Lonsdale, S. J.

AU - Paradela, C.

AU - Schillebeeckx, P.

AU - Aberle, O.

AU - Amaducci, S.

AU - Andrzejewski, J.

AU - Audouin, L.

AU - Bacak, M.

AU - Balibrea, J.

AU - Barbagallo, M.

AU - Bečvář, F.

AU - Berthoumieux, E.

AU - Billowes, J.

AU - Bosnar, D.

AU - Brown, A.

AU - Caamaño, M.

AU - Calviño, F.

AU - Calviani, M.

AU - Cano-Ott, D.

AU - Cardella, R.

AU - Casanovas, A.

AU - Cerutti, F.

AU - Chen, Y. H.

AU - Chiaveri, E.

AU - Colonna, N.

AU - Cortés, G.

AU - Cortés-Giraldo, M. A.

AU - Cosentino, L.

AU - Cristallo, S.

AU - Damone, L. A.

AU - Diakaki, M.

AU - Domingo-Pardo, C.

AU - Dressler, R.

AU - Dupont, E.

AU - Durán, I.

AU - Fernández-Domínguez, B.

AU - Ferrari, A.

AU - Ferreira, P.

AU - Ferrer, F. J.

AU - Finocchiaro, P.

AU - Furman, V.

AU - Göbel, K.

AU - García, A. R.

AU - Rauscher, T.

N1 - Funding Information: We thank P. Black (University of Edinburgh) for support in design and construction of the detection system and P. Morrall (Daresbury Laboratory) for production of the B and LiF reference samples. This Letter was supported by the Austrian Science Fund (FWF), Project No. J3503, by JRC-IRMM through the EUFRAT Program, by the U.K. Science and Technologies Facilities Council (STFC), Projects No. ST/L005824/1 and No. ST/M006085/1, the European Research Council ERC-2015-STG Grant No. 677497, and the Cost Action “ChETEC” (Grant No. CA16117). Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2021/9/22

Y1 - 2021/9/22

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85116049311&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.104.L032803

DO - 10.1103/PhysRevC.104.L032803

M3 - Article

AN - SCOPUS:85116049311

VL - 104

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 3

M1 - L032803

ER -