Measurement of the radiative capture cross section of the s-process branching points 204Tl and 171Tm at the n-TOF facility (CERN)

A. Casanovas, C. Domingo-Pardo, C. Guerrero, J. Lerendegui-Marco, F. Calviño, A. Tarifeño-Saldivia, R. Dressler, S. Heinitz, N. Kivel, J. M. Quesada, D. Schumann, O. Aberle, V. Alcayne, J. Andrzejewski, L. Audouin, V. Bécares, M. Bacak, M. Barbagallo, F. Bečvář, G. BelliaE. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Busso, M. Caamaño, L. Caballero-Ontanaya, M. Calviani, D. Cano-Ott, F. Cerutti, Y. H. Chen, E. Chiaveri, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, S. Cristallo, L. A. Damone, M. Diakaki, M. Dietz, E. Dupont, I. Durán, Z. Eleme, B. Fernández-Domínguez, A. Ferrari, P. Ferreira, P. Finocchiaro, V. Furman, K. Göbel, T. Rauscher

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Abstract

The neutron capture cross section of some unstable nuclei is especially relevant for s-process nucleosynthesis studies. This magnitude is crucial to determine the local abundance pattern, which can yield valuable information of the s-process stellar environment. In this work we describe the neutron capture (n,γ) measurement on two of these nuclei of interest, 204Tl and 171Tm, from target production to the final measurement, performed successfully at the n-TOF facility at CERN in 2014 and 2015. Preliminary results on the ongoing experimental data analysis will also be shown. These results include the first ever experimental observation of capture resonances for these two nuclei.

Original languageEnglish
Article number03004
JournalEPJ Web of Conferences
Volume178
DOIs
Publication statusPublished - 16 May 2018
Event16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, CGS 2017 - Shanghai, China
Duration: 18 Sept 201722 Sept 2017

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