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

n_TOF Collaboration; C. Lederer-Woods; P. J.  Woods; T. Davinson; D Kahl; S.J. Lonsdale

doi:10.1103/PhysRevC.104.L022803

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

n_TOF Collaboration, C. Lederer-Woods^*, P. J. Woods, T. Davinson, D Kahl, S.J. Lonsdale

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Letter › peer-review

Abstract

The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic ϒ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by Asymptotic Giant Branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high ux beam line EAR-2 at the n TOF facility (CERN). We report resonance strengths for 11 resonances, 9 being measured for the first time, while there isonly one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross section data range to 150 keV neutron energy, sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.

Original language	English
Article number	L022803
Pages (from-to)	1-7
Number of pages	7
Journal	Physical Review C
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.104.L022803
Publication status	Published - 30 Aug 2021

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title = "Destruction of the cosmic ϒ-ray emitter 26Al in massive stars: Study of the key 26Al(n,p) reaction",

abstract = "The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic ϒ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by Asymptotic Giant Branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high ux beam line EAR-2 at the n TOF facility (CERN). We report resonance strengths for 11 resonances, 9 being measured for the first time, while there isonly one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross section data range to 150 keV neutron energy, sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.",

author = "{n_TOF Collaboration} and C. Lederer-Woods and Woods, {P. J.} and T. Davinson and D Kahl and S.J. Lonsdale",

year = "2021",

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doi = "10.1103/PhysRevC.104.L022803",

language = "English",

volume = "104",

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journal = "Physical Review C",

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T1 - Destruction of the cosmic ϒ-ray emitter 26Al in massive stars: Study of the key 26Al(n,p) reaction

AU - n_TOF Collaboration

AU - Lederer-Woods, C.

AU - Woods, P. J.

AU - Davinson, T.

AU - Kahl, D

AU - Lonsdale, S.J.

PY - 2021/8/30

Y1 - 2021/8/30

N2 - The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic ϒ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by Asymptotic Giant Branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high ux beam line EAR-2 at the n TOF facility (CERN). We report resonance strengths for 11 resonances, 9 being measured for the first time, while there isonly one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross section data range to 150 keV neutron energy, sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.

AB - The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic ϒ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by Asymptotic Giant Branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high ux beam line EAR-2 at the n TOF facility (CERN). We report resonance strengths for 11 resonances, 9 being measured for the first time, while there isonly one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross section data range to 150 keV neutron energy, sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.

U2 - 10.1103/PhysRevC.104.L022803

DO - 10.1103/PhysRevC.104.L022803

M3 - Letter

VL - 104

SP - 1

EP - 7

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 2

M1 - L022803

ER -

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

Abstract

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