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. Bellia; E. 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; A. Gawlik; S. Gilardoni; T. Glodariu; I. F. Gonçalves; E. González-Romero; F. Gunsing; J. Heyse; D. G. Jenkins; F. Käppeler; Y. Kadi; T. Katabuchi; A. Kimura; M. Kokkoris; Y. Kopatch; M. Krtička; D. Kurtulgil; I. Ladarescu; C. Lederer-Woods; S. Lo Meo; S. J. Lonsdale; D. Macina; T. Martínez; A. Masi; C. Massimi; P. Mastinu; M. Mastromarco; F. Matteucci; E. A. Maugeri; A. Mazzone; E. Mendoza; A. Mengoni; V. Michalopoulou; P. M. Milazzo; F. Mingrone; A. Musumarra; A. Negret; R. Nolte; F. Ogállar; A. Oprea; N. Patronis; A. Pavlik; J. Perkowski; L. Persanti; I. Porras; J. Praena; D. Radeck; D. Ramos; T. Rauscher; R. Reifarth; D. Rochman; M. Sabaté-Gilarte; A. Saxena; P. Schillebeeckx; S. Simone; A. G. Smith; N. V. Sosnin; A. Stamatopoulos; G. Tagliente; J. L. Tain; T. Talip; L. Tassan-Got; A. Tsinganis; J. Ulrich; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; V. Vlachoudis; R. Vlastou; A. Wallner; P. J. Woods; T. Wright; P. Žugec; U Köster

doi:10.1051/epjconf/201817803004

All issues

Volume 178 (2018)

EPJ Web Conf., 178 (2018) 03004

Abstract

Open Access

Issue		EPJ Web Conf. Volume 178, 2018 16^th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)


Article Number		03004
Number of page(s)		5
Section		Nuclear Reactions
DOI		https://doi.org/10.1051/epjconf/201817803004
Published online		16 May 2018

EPJ Web of Conferences 178, 03004 (2018)
https://doi.org/10.1051/epjconf/201817803004

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

A. Casanovas¹, C. Domingo-Pardo², C. Guerrero³, J. Lerendegui-Marco³, F. Calviño¹, A. Tarifeño-Saldivia¹, R. Dressler⁴, S. Heinitz⁴, N. Kivel⁴, J. M. Quesada³, D. Schumann⁴, O. Aberle⁵, V. Alcayne⁶, J. Andrzejewski⁷, L. Audouin⁸, V. Bécares⁶, M. Bacak⁵^,9^,10, M. Barbagallo⁵^,11, F. Bečvář¹², G. Bellia¹³^,14, E. Berthoumieux¹⁰, J. Billowes¹⁵, D. Bosnar¹⁶, A. Brown¹⁷, M. Busso¹¹^,18^,19, M. Caamaño²⁰, L. Caballero-Ontanaya², M. Calviani⁵, D. Cano-Ott⁶, F. Cerutti⁵, Y. H. Chen⁸, E. Chiaveri⁵^,15^,3, N. Colonna¹¹, G. Cortés¹, M. A. Cortés-Giraldo³, L. Cosentino¹³, S. Cristallo¹¹^,18^,21, L. A. Damone¹¹^,22, M. Diakaki²³^,5, M. Dietz²⁴, E. Dupont¹⁰, I. Durán²⁰, Z. Eleme²⁵, B. Fernández-Domínguez²⁰, A. Ferrari⁵, P. Ferreira²⁶, P. Finocchiaro¹³, V. Furman²⁷, K. Göbel²⁸, A. Gawlik⁷, S. Gilardoni⁵, T. Glodariu²⁹, I. F. Gonçalves²⁶, E. González-Romero⁶, F. Gunsing¹⁰, J. Heyse³⁰, D. G. Jenkins¹⁷, F. Käppeler³¹, Y. Kadi⁵, T. Katabuchi³², A. Kimura³³, M. Kokkoris²³, Y. Kopatch²⁷, M. Krtička¹², D. Kurtulgil²⁸, I. Ladarescu², C. Lederer-Woods²⁴, S. Lo Meo³⁴^,35, S. J. Lonsdale²⁴, D. Macina⁵, T. Martínez⁶, A. Masi⁵, C. Massimi³⁵^,36, P. Mastinu³⁷, M. Mastromarco⁵, F. Matteucci³⁸^,39, E. A. Maugeri⁴, A. Mazzone¹¹^,40, E. Mendoza⁶, A. Mengoni³⁴, V. Michalopoulou²³, P. M. Milazzo³⁸, F. Mingrone⁵, A. Musumarra¹³^,14, A. Negret²⁹, R. Nolte⁴¹, F. Ogállar⁴², A. Oprea²⁹, N. Patronis²⁵, A. Pavlik⁴³, J. Perkowski⁷, L. Persanti¹¹^,18^,21, I. Porras⁴², J. Praena⁴², D. Radeck⁴¹, D. Ramos⁸, T. Rauscher⁴⁴^,24, R. Reifarth²⁸, D. Rochman⁴, M. Sabaté-Gilarte⁵^,3, A. Saxena⁴⁵, P. Schillebeeckx³⁰, S. Simone¹³, A. G. Smith¹⁵, N. V. Sosnin¹⁵, A. Stamatopoulos²³, G. Tagliente¹¹, J. L. Tain², T. Talip⁴, L. Tassan-Got⁵^,8, A. Tsinganis⁵, J. Ulrich⁴, S. Valenta¹², G. Vannini³⁵^,36, V. Variale¹¹, P. Vaz²⁶, A. Ventura³⁵, V. Vlachoudis⁵, R. Vlastou²³, A. Wallner⁴⁶, P. J. Woods²⁴, T. Wright¹⁵, P. Žugec¹⁶ and U Köster⁴⁷

¹ Universitat Politècnica de Catalunya, Spain
² Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Spain
³ Universidad de Sevilla, Spain
⁴ Paul Scherrer Institut (PSI), Villingen, Switzerland
⁵ European Organization for Nuclear Research (CERN), Switzerland
⁶ Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Spain
⁷ University of Lodz, Poland
⁸ Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
⁹ Technische Universität Wien, Austria
¹⁰ CEA Irfu, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
¹¹ Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
¹² Charles University, Prague, Czech Republic
¹³ INFN Laboratori Nazionali del Sud, Catania, Italy
¹⁴ Dipartimento di Fisica e Astronomia, Università di Catania, Italy
¹⁵ University of Manchester, United Kingdom
¹⁶ Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
¹⁷ University of York, United Kingdom
¹⁸ Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Italy
¹⁹ Dipartimento di Fisica e Geologia, Università di Perugia, Italy
²⁰ University of Santiago de Compostela, Spain
²¹ Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Teramo, Italy
²² Dipartimento di Fisica, Università degli Studi di Bari, Italy
²³ National Technical University of Athens, Greece
²⁴ School of Physics and Astronomy, University of Edinburgh, United Kingdom
²⁵ University of Ioannina, Greece
²⁶ Instituto Superior Técnico, Lisbon, Portugal
²⁷ Joint Institute for Nuclear Research (JINR), Dubna, Russia
²⁸ Goethe University Frankfurt, Germany
²⁹ Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
³⁰ European Commission, Joint Research Centre, Geel, Retieseweg 111, B-2440 Geel, Belgium
³¹ Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
³² Tokyo Institute of Technology, Japan
³³ Japan Atomic Energy Agency (JAEA), Tokai-mura, Japan
³⁴ Agenzia nazionale per le nuove tecnologie (ENEA), Bologna, Italy
³⁵ Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
³⁶ Dipartimento di Fisica e Astronomia, Università di Bologna, Italy
³⁷ Istituto Nazionale di Fisica Nucleare, Sezione di Legnaro, Italy
³⁸ Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
³⁹ Dipartimento di Astronomia, Università di Trieste, Italy
⁴⁰ Consiglio Nazionale delle Ricerche, Bari, Italy
⁴¹ Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
⁴² University of Granada, Spain
⁴³ University of Vienna, Faculty of Physics, Vienna, Austria
⁴⁴ Department of Physics, University of Basel, Switzerland
⁴⁵ Bhabha Atomic Research Centre (BARC), India
⁴⁶ Australian National University, Canberra, Australia
⁴⁷ Institute Laue Langevin (ILL), Grenoble, France

Published online: 16 May 2018

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.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).

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