Destruction of the cosmic gamma-ray emitter Al-26 in massive stars: Study of the key Al-26(n, p) reaction Lederer Woods, C. Porras Sánchez, José Ignacio Praena Rodríguez, Antonio Javier TOF Collaboration The authors 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 work was supported be the Austrian Science Fund (FWF), project J3503, by the UK Science and Technologies Facilities Council (STFC), projects ST/L005824/1 and ST/M006085/1, and the European Research Council ERC-2015-STG Nr. 677497. The Al-26(n, p) Mg-26 reaction is the key reaction impacting on the abundances of the cosmic gamma-ray emitter Al-26 produced in massive stars and impacts on the potential pollution of the early solar system with Al-26 by asymptotic giant branch stars. We performed a measurement of the Al-26(n, p) Mg-26 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. 2021-10-08T07:31:19Z 2021-10-08T07:31:19Z 2021-08-30 journal article Lederer-Woods, C... [et al.] (2021). Destruction of the cosmic ϒ-ray emitter 26Al in massive stars: study of the key 26Al (n, p) reaction. Physical Review C. [https://doi.org/10.1103/PhysRevC.104.L022803] http://hdl.handle.net/10481/70739 10.1103/PhysRevC.104.L022803 eng info:eu-repo/grantAgreement/EC/H2020/677497 http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España American Physical Society