First Results of the ¹⁴⁰Ce(n,γ)¹⁴¹Ce Cross-Section Measurement at n_TOF

Author(s)

Simone Amaducci, Nicola Colonna, Luigi Cosentino, Sergio Cristallo, Paolo Finocchiaro, Milan Krtička, Cristian Massimi, Mario Mastromarco, Annamaria Mazzone, Alberto Mengoni, Stanislav Valenta, Oliver Aberle, Victor Alcayne, Józef Andrzejewski, Laurent Audouin, Victor Babiano-Suarez, Michael Bacak, Massimo Barbagallo, Samuel Bennett, Eric Berthoumieux, Jon Billowes, Damir Bosnar, Adam Brown, Maurizio Busso, Manuel Caamaño, Luis Caballero-Ontanaya, Francisco Calviño, Marco Calviani, Daniel Cano-Ott, Adria Casanovas, Francesco Cerutti, Enrico Chiaveri, Guillem Cortés, Miguel Cortés-Giraldo, Lucia-Anna Damone, Paul-John Davies, Maria Diakaki, Mirco Dietz, Cesar Domingo-Pardo, Rugard Dressler, Quentin Ducasse, Emmeric Dupont, Ignacio Durán, Zinovia Eleme, Beatriz Fernández-Domínguez, Alfredo Ferrari, Valter Furman, Kathrin Göbel, Ruchi Garg, Aleksandra Gawlik, Simone Gilardoni, Isabel Gonçalves, Enrique González-Romero, Carlos Guerrero, Frank Gunsing, Hideo Harada, Stephan Heinitz, Jan Heyse, David Jenkins, Arnd Junghans, Franz Käppeler, Yacine Kadi, Atsushi Kimura, Ingrid Knapova, Michael Kokkoris, Yuri Kopatch, Deniz Kurtulgil, Ion Ladarescu, Claudia Lederer-Woods, Helmut Leeb, Jorge Lerendegui-Marco, Sarah-Jane Lonsdale, Daniela Macina, Alice Manna, Trinitario Martínez, Alessandro Masi, Pierfrancesco Mastinu, Emilio-Andrea Maugeri, Emilio Mendoza, Veatriki Michalopoulou, Paolo Milazzo, Federica Mingrone, Javier Moreno-Soto, Agatino Musumarra, Alexandru Negret, Francisco Ogállar, Andreea Oprea, Nikolas Patronis, Andreas Pavlik, Jarosław Perkowski, Luciano Piersanti, Cristina Petrone, Elisa Pirovano, Ignacio Porras, Javier Praena, José-Manuel Quesada, Diego Ramos-Doval, Thomas Rauscher, René Reifarth, Dimitri Rochman, Carlo Rubbia, Marta Sabaté-Gilarte, Alok Saxena, Peter Schillebeeckx, Dorothea Schumann, Adhitya Sekhar, Gavin Smith, Nikolay Sosnin, Peter Sprung, Athanasios Stamatopoulos, Giuseppe Tagliente, José Tain, Ariel Tarifeño-Saldivia, Laurent Tassan-Got, Benedikt Thomas, Pablo Torres-Sánchez, Andrea Tsinganis, Jiri Ulrich, Sebastian Urlass, Gianni Vannini, Vincenzo Variale, Pedro Vaz, Alberto Ventura, Diego Vescovi, Vasilis Vlachoudis, Rosa Vlastou, Anton Wallner, PhilipJohn Woods, Tobias Wright, Petar Žugec

Abstract

An accurate measurement of the 140Ce(n,γ) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the 140Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in 140Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the 140Ce Maxwellian-averaged cross-section.

Organisation(s)

Isotope Physics

External organisation(s)

Australian National University, Technische Universität Wien, INFN Laboratori Nazionali del Sud, Università degli Studi di Catania, Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Bari, Istituto Nazionale di Fisica Nucleare (INFN), Roma, INAF - Osservatorio Astronomico d'Abruzzo, Charles University Prague, Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Bologna, University of Bologna, European Organization for Nuclear Research (CERN), Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", CNR, Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, University of Lodz, Université Paris XI - Paris-Sud, Universitat de València, Université Paris-Saclay, University of Manchester, University of Zagreb, University of York, Università degli Studi di Perugia, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Universidad de Sevilla, Università degli Studi di Bari, National Technical University of Athens (NTUA), University of Edinburgh, Paul Scherrer Institute, Physikalisch-Technische Bundesanstalt, University of Ioannina, Joint Institute for Nuclear Research, Johann Wolfgang Goethe-Universität Frankfurt am Main, Instituto Superior Técnico, Japan Atomic Energy Agency, Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, Helmholtz-Zentrum Dresden-Rossendorf, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Universidad de Granada, Institut de Physique Nucléaire, CNRS-IN2P3, Universität Basel, University of Hertfordshire, Bhabha Atomic Research Center, Instituto de Física Corpuscular (IFIC), Gran Sasso Science Institute (GSSI), Karlsruher Institut für Technologie

Journal

Universe

Volume

7

No. of pages

11

ISSN

2218-1997

DOI

https://doi.org/10.3390/universe7060200

Publication date

06-2021

Peer reviewed

Yes

Austrian Fields of Science 2012

103012 High energy physics

Keywords

ASJC Scopus subject areas

Physics and Astronomy(all)

Portal url

https://ucris.univie.ac.at/portal/en/publications/first-results-of-the-140cen141ce-crosssection-measurement-at-ntof(f2ce0724-ded9-4ffd-86d6-77e29eb60d43).html