Record link: 
http://hdl.handle.net/20.500.12708/137835
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Title: 
Destruction of the cosmic γ-ray emitter ²⁶Al in massive stars: Study of the key ²⁶Al(n,p) reaction
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Citation: 
Lederer-Woods, C., Woods, P. J., Davinson, T., Kahl, D., Lonsdale, S.-J., 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., Calvino, F., … Žugec, P. (2021). Destruction of the cosmic γ-ray emitter 26Al in massive stars: Study of the key 26Al(n,p) reaction. Physical Review C, 104(L022803), 1–7. https://doi.org/10.1103/physrevc.104.l022803
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Publisher DOI: 
10.1103/physrevc.104.l022803
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Publication Type: 
Article - Original Research Article
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Authors: 
Lederer-Woods, Claudia 
Woods, Phil J. 
Davinson, Tom 
Kahl, David 
Lonsdale, Sarah-Jane 
Aberle, O. 
Amaducci, Simone 
Andrzejewski, J. 
Audouin, L. 
Bacak, Michael 
Balibrea, J. 
Barbagallo, M. 
Bečvář, F. 
Berthoumieux, E. 
Billowes, J. 
Bosnar, D. 
Brown, A. 
Caamaño, M. 
Calvino, Francisco 
Griesmayer, Erich 
Jericha, Erwin 
Kavrigin, Pavel 
Leeb, Helmut 
Weiss, C. 
Žugec, P. 
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Organisational Unit: 
E141-04 - Forschungsbereich Neutron- and Quantum Physics 
E141 - Atominstitut 
E141-03 - Forschungsbereich Nuclear and Particle Physics 
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Journal: 
Physical Review C 
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ISSN: 
2469-9985
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Date (published): 
2021
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Number of Pages: 
7
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Publisher: 
AMER PHYSICAL SOC
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Peer reviewed: 
Yes
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Keywords: 
Nuclear astrophysics; Resonance reactions; Nuclear reactions; Neutron induced nuclear reactions; Nucleosynthesis in explosive environments; 20 #lt= A #lt= 38; Time-of-flight neutron spectroscopy
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Abstract: 
The ²⁶Al(n,p)²⁶Mg reaction is the key reaction impacting on the abundances of the cosmic γ-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-flux beam line EAR-2 at the n_TOF facility (CERN). We report resonance strengths for eleven resonances, nine being measured for the first time, while there is only 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, which is sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.
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Research Areas: 
Special and Engineering Materials: 10%
Materials Characterization: 70%
Modelling and Simulation: 20%
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Science Branch: 
Physik, Astronomie
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