High resolution 80Se(n,γ) cross section measurement at CERN n_TOF Babiano Suarez, V. Ogállar Ruiz, Francisco Porras Sánchez, José Ignacio Praena Rodríguez, Antonio Javier Torres Sánchez, Pablo n_TOF Collaboration We acknowledge support from from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 681740), and the Spanish Science Ministry for funding projects FPA2017-83946-C2-1-P and PID2019-104714GB-C21. This work is part of the PhD Thesis of V. Babiano-Suarez. Neutron capture cross section measurements of isotopes close to s -process branching -points are of fundamental importance for the understanding of this nucleosynthesis mechanism through which about 50% of the elements heavier than iron are produced. We present in this contribution the results corresponding to the high resolution measurement, for first time ever, of the 80Se(n, y) cross section, in which 98 resonances never measured before have been reported. As a consequence, ten times more precise values for the MACS have been obtained compared to previous accepted value adopted in the astrophysical KADoNiS data base. 2023-10-17T08:39:37Z 2023-10-17T08:39:37Z 2023-05-26 conference output Babiano Suarez, V. et al. High resolution 80Se(n,γ) cross section measurement at CERN n_TOF. EPJ Web of Conferences , 01001 (2023)284 ND2022. [https://doi.org/10.1051/epjconf/202328401001] https://hdl.handle.net/10481/85040 10.1051/epjconf/202328401001 eng info:eu-repo/grantAgreement/EC/H2020/681740 http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional EDP Sciences