The 154Gd neutron capture cross section measured at the n_TOF facility and its astrophysical implications

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

  • The (n, γ) cross sections of the gadolinium isotopes play an important role in the study of the stellar nucleosynthesis. In particular, among the isotopes heavier than Fe, 154Gd together with 152Gd have the peculiarity to be mainly produced by the slow capture process, the so-called s-process, since they are shielded against the β-decay chains from the r-process region by their stable samarium isobars. Such a quasi pure s-process origin makes them crucial for testing the robustness of stellar models in galactic chemical evolution (GCE). According to recent models, the 154Gd and 152Gd abundances are expected to be 15-20% lower than the reference un-branched s-process 150Sm isotope. The close correlation between stellar abundances and neutron capture cross sections prompted for an accurate measurement of 154Gd cross section in order to reduce the uncertainty attributable to nuclear physics input and eventually rule out one of the possible causes of present discrepancies between observation and model predictions. To this end, the neutron capture cross section of 154Gd was measured in a wide neutron energy range (from thermal up to some keV) with high resolution in the first experimental area of the neutron time-of-flight facility n_TOF (EAR1) at CERN. In this contribution, after a brief description of the motivation and of the experimental setup used in the measurement, the preliminary results of the 154Gd neutron capture reaction as well as their astrophysical implications are presented.

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Author:Mario MastromarcoORCiD, Annamaria MazzoneORCiD, Cristian MassimiORCiD, Sergio CristalloORCiD, Nicola ColonnaORCiD, Oliver Aberle, Victor AlcayneORCiD, Simone AmaducciORCiD, Józef AndrzejewskiORCiD, Laurent AudouinORCiD, Victor Babiano SuarezORCiD, Michael BacakORCiD, Massimo Barbagallo, Samuel BennettORCiD, Eric BerthoumieuxORCiD, Damir BosnarORCiD, Adam S. Brown, Maurizio BussoORCiD, Manuel CaamañoORCiD, Luis Caballero OntanayaORCiD, Marco CalvianiORCiD, Francisco Calviño TavaresORCiD, Daniel Cano-OttORCiD, Adrià Casanovas HosteORCiD, Francesco CeruttiORCiDGND, Enrico Chiaveri, Guillem Pere Cortés RossellORCiD, Miguel Antonio Cortés-GiraldoORCiD, Luigi CosentinoORCiD, Lucia Anna Damone, Paul John Davies, Maria Diakaki, Mirco Dietz, César Domingo-PardoORCiD, Rugard Dressler, Quentin Ducasse, Emmeric Dupont, Ignacio Durán, Zinovia Eleme, Beatriz Fernández DomínguezORCiD, Alfredo Ferrari, Isabel Maria Ferro GonçalvesORCiD, Paolo FinocchiaroORCiD, Valter FurmanORCiD, Ruchi GargORCiD, Aleksandra GawlikORCiD, Simone Gilardoni, Kathrin GöbelORCiDGND, Enrique Miguel González Romero, Carlos Guerrero SánchezORCiD, Frank Gunsing, Stephan HeinitzORCiD, Jan Heyse, David JenkinsORCiDGND, Erwin JerichaORCiDGND, U. Jiri, Arnd Rudolf JunghansORCiDGND, Yacine KadiORCiD, Franz Käppeler, Atsushi Kimura, Ingrid Knapová, Michael KokkorisORCiD, Yuri N. Kopatch, Milan KrtičkaORCiD, Cem Deniz KurtulgilGND, Ion LadarescuORCiD, Claudia Lederer-Woods, Jorge Lerendegui-MarcoORCiD, Sarah-Jane Lonsdale, Daniela Macina, Alice MannaORCiD, Trinitario Martínez, Alessandro Masi, Pierfrancesco MastinuORCiD, Emilio Andrea MaugeriORCiD, Emilio Mendoza CembranosORCiD, Alberto MengoniORCiD, Veatriki Michalopoulou, Paolo Maria MilazzoORCiD, María de los Ángeles Millán Callado, Federica MingroneORCiD, Javier Moreno-Soto, Agatino MusumarraORCiD, Alexandru NegretORCiD, Francisco Ogállar RuizORCiD, Andreea Oprea, Nikolas PatronisORCiD, Andreas PavlikORCiD, Jarosław PerkowskiORCiD, Cristina Petrone, Luciano PiersantiORCiD, Elisa PirovanoORCiD, Ignacio PorrasORCiD, Javier PraenaORCiD, Jose Manuel Quesada, Diego Ramos Doval, René ReifarthORCiD, Dimitri RochmanORCiD, Carlo RubbiaGND, Marta Sabaté-Gilarte, Alok SaxenaORCiD, Peter Schillebeeckx, Dorothea SchumannORCiD, Adhitya Sekhar, Alastair Gavin Smith, Nikolay V. SosninORCiD, Peter SprungORCiD, Athanasios StamatopoulosORCiD, Giuseppe TaglienteORCiD, José Luis Taı́n EnríquezORCiD, Ariel Tarifeño-SaldiviaORCiD, Laurent Tassan-Got, Benedikt Thomas, Pablo Torres-SánchezORCiD, Andrea TsinganisORCiD, Sebastian Urlaß, Stanislav Valenta, Gianni VanniniORCiD, Vincenzo VarialeORCiD, Pedro VazORCiD, Alberto VenturaORCiD, Diego VescoviORCiD, Vasilis Vlachoudis, Rosa Vlastou, Anton WallnerORCiD, Philip John Woods, Tobias J. Wright, Petar ŽugecORCiD
URN:urn:nbn:de:hebis:30:3-700762
DOI:https://doi.org/10.1051/epjconf/202023907003
ISSN:2100-014X
Parent Title (English):EPJ Web of Conferences
Publisher:EDP Sciences
Place of publication:Les Ulis
Document Type:Article
Language:English
Date of Publication (online):2020/09/30
Date of first Publication:2020/09/30
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:International Conference on Nuclear Data for Science and Technology (2019 : Peking)
Release Date:2022/09/27
Volume:239
Issue:07003
Page Number:5
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0