Measurement of the 241Am(n,γ) cross section at the n_TOF facility at CERN

A. Oprea; F. Gunsing; P. Schillebeeckx; O. Aberle; M. Bacak; E. Berthoumieux; D. Cano-Ott; M. Diakaki; E. Dupont; B. Geslot; T. Glodariu†; J. Heyse; E. Mendoza; A. Negret; V. Alcayne; S. Amaducci; J. Andrzejewski; L. Audouin; V. Bécares; V. Babiano-Suarez; M. Barbagallo; F. Bečvář; G. Bellia; J. Billowes; D. Bosnar; A. Brown; M. Busso; M. Caamaño; L. Caballero-Ontanaya; F. Calviño; M. Calviani; A. Casanovas; F. Cerutti; Y. H. Chen; E. Chiaveri; N. Colonna; G. Cortés; M. A. Cortés-Giraldo; L. Cosentino; S. Cristallo; L. A. Damone; M. Dietz; C. Domingo-Pardo; R. Dressler; I. Durán; Z. Eleme; B. Fernández-Domínguez; A. Ferrari; P. Finocchiaro; V. Furman; K. Göbel; R. Garg; A. Gawlik-Ramięga; S. Gilardoni; I. F. Gonçalves; E. González-Romero; C. Guerrero; H. Harada; S. Heinitz; D. G. Jenkins; E. Jericha; F. Käppeler†; G. Kaur; Y. Kadi; A. Kimura; N. Kivel; M. Kokkoris; Y. Kopatch; M. Krtička; D. Kurtulgil; I. Ladarescu; C. Lederer-Woods; H. Leeb; J. Lerendegui-Marco; S. Lo Meo; S. J. Lonsdale; D. Macina; A. Manna; T. Martínez; A. Masi; C. Massimi; P. Mastinu; M. Mastromarco; F. Matteucci; E. A. Maugeri; A. Mazzone; A. Mengoni; V. Michalopoulou; P. M. Milazzo; F. Mingrone; A. Musumarra; R. Nolte; F. Ogállar; N. Patronis; A. Pavlik; J. Perkowski; L. Piersanti; I. Porras; J. Praena; J. M. Quesada; D. Radeck; D. Ramos-Doval; T. Rauscher; R. Reifarth; D. Rochman; C. Rubbia; M. Sabaté-Gilarte; A. Saxena; D. Schumann; A. G. Smith; N. V. Sosnin; A. Stamatopoulos; G. Tagliente; J. L. Tain; T. Talip; A. Tarifeño-Saldivia; L. Tassan-Got; P. Torres-Sánchez; A. Tsinganis; J. Ulrich; S. Urlass; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; V. Vlachoudis; R. Vlastou; A. Wallner; P. J. Woods; T. Wright; P. Žugec

doi:10.1051/epjconf/202328401036

All issues

Volume 284 (2023)

EPJ Web of Conf., 284 (2023) 01036

Abstract

Open Access

Issue		EPJ Web of Conf. Volume 284, 2023 15^th International Conference on Nuclear Data for Science and Technology (ND2022)


Article Number		01036
Number of page(s)		4
Section		Nuclear Reaction Measurements
DOI		https://doi.org/10.1051/epjconf/202328401036
Published online		26 May 2023

EPJ Web of Conferences 284, 01036 (2023)
https://doi.org/10.1051/epjconf/202328401036

Measurement of the ²⁴¹Am(n,γ) cross section at the n_TOF facility at CERN

A. Oprea¹, F. Gunsing², P. Schillebeeckx³, O. Aberle⁴, M. Bacak⁴^,5^,2, E. Berthoumieux², D. Cano-Ott⁶, M. Diakaki⁷^,4, E. Dupont², B. Geslot⁸, T. Glodariu†¹, J. Heyse³, E. Mendoza⁶, A. Negret¹, V. Alcayne⁶, S. Amaducci⁹^,10, J. Andrzejewski¹¹, L. Audouin¹², V. Bécares⁶, V. Babiano-Suarez¹³, M. Barbagallo⁴^,14, F. Bečvář¹⁵, G. Bellia⁹^,10, J. Billowes¹⁶, D. Bosnar¹⁷, A. Brown¹⁸, M. Busso¹⁹^,20, M. Caamaño²¹, L. Caballero-Ontanaya¹³, F. Calviño²², M. Calviani⁴, A. Casanovas²², F. Cerutti⁴, Y. H. Chen¹², E. Chiaveri⁴^,16^,23, N. Colonna¹⁴, G. Cortés²², M. A. Cortés-Giraldo²³, L. Cosentino⁹, S. Cristallo¹⁹^,24, L. A. Damone¹⁴^,25, M. Dietz²⁶, C. Domingo-Pardo¹³, R. Dressler²⁷, I. Durán²¹, Z. Eleme²⁸, B. Fernández-Domínguez²¹, A. Ferrari⁴, P. Finocchiaro⁹, V. Furman²⁹, K. Göbel³⁰, R. Garg²⁶, A. Gawlik-Ramięga¹¹, S. Gilardoni⁴, I. F. Gonçalves³¹, E. González-Romero⁶, C. Guerrero²³, H. Harada³², S. Heinitz²⁷, D. G. Jenkins¹⁸, E. Jericha⁵, F. Käppeler†³³, G. Kaur², Y. Kadi⁴, A. Kimura³², N. Kivel²⁷, M. Kokkoris⁷, Y. Kopatch²⁹, M. Krtička¹⁵, D. Kurtulgil³⁰, I. Ladarescu¹³, C. Lederer-Woods²⁶, H. Leeb⁵, J. Lerendegui-Marco²³, S. Lo Meo³⁴^,35, S. J. Lonsdale²⁶, D. Macina⁴, A. Manna³⁵^,36, T. Martínez⁶, A. Masi⁴, C. Massimi³⁵^,36, P. Mastinu³⁷, M. Mastromarco⁴, F. Matteucci³⁸^,39, E. A. Maugeri²⁷, A. Mazzone¹⁴^,40, A. Mengoni³⁴, V. Michalopoulou⁷, P. M. Milazzo³⁸, F. Mingrone⁴, A. Musumarra⁴¹^,10, R. Nolte⁴², F. Ogállar⁴³, N. Patronis²⁸, A. Pavlik⁴⁴, J. Perkowski¹¹, L. Piersanti¹⁴^,19^,24, I. Porras⁴³, J. Praena⁴³, J. M. Quesada²³, D. Radeck⁴², D. Ramos-Doval¹², T. Rauscher⁴⁵^,46, R. Reifarth³⁰, D. Rochman²⁷, C. Rubbia⁴, M. Sabaté-Gilarte⁴^,23, A. Saxena⁴⁷, D. Schumann²⁷, A. G. Smith¹⁶, N. V. Sosnin¹⁶, A. Stamatopoulos⁷, G. Tagliente¹⁴, J. L. Tain¹³, T. Talip²⁷, A. Tarifeño-Saldivia²², L. Tassan-Got⁴^,7^,12, P. Torres-Sánchez⁴³, A. Tsinganis⁴, J. Ulrich²⁷, S. Urlass⁴^,48, S. Valenta¹⁵, G. Vannini³⁵^,36, V. Variale¹⁴, P. Vaz³¹, A. Ventura³⁵, V. Vlachoudis⁴, R. Vlastou⁷, A. Wallner⁴⁹, P. J. Woods²⁶, T. Wright¹⁶ and P. Žugec¹⁷ (The n_TOF Collaboration)

¹ Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
² CEA Irfu, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
³ European Commission, Joint Research Centre (JRC), Geel, Belgium
⁴ European Organization for Nuclear Research (CERN), Switzerland
⁵ TU Wien, Atominstitut, Stadionallee 2, 1020 Wien, Austria
⁶ Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Spain
⁷ National Technical University of Athens, Greece
⁸ CEA Cadarache, DES, Saint-Paul-les-Durance 13108, France
⁹ INFN Laboratori Nazionali del Sud, Catania, Italy
¹⁰ Department of Physics and Astronomy, University of Catania, Italy
¹¹ University of Lodz, Poland
¹² Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
¹³ Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain
¹⁴ Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
¹⁵ Charles University, Prague, Czech Republic
¹⁶ University of Manchester, United Kingdom
¹⁷ Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
¹⁸ University of York, United Kingdom
¹⁹ Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Italy
²⁰ Dipartimento di Fisica e Geologia, Università di Perugia, Italy
²¹ University of Santiago de Compostela, Spain
²² Universitat Politècnica de Catalunya, Spain
²³ Universidad de Sevilla, Spain
²⁴ Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Teramo, Italy
²⁵ Dipartimento Interateneo di Fisica, Università degli Studi di Bari, Italy
²⁶ School of Physics and Astronomy, University of Edinburgh, United Kingdom
²⁷ Paul Scherrer Institut (PSI), Villigen, Switzerland
²⁸ University of Ioannina, Greece
²⁹ Joint Institute for Nuclear Research (JINR), Dubna, Russia
³⁰ Goethe University Frankfurt, Germany
³¹ Instituto Superior Técnico, Lisbon, Portugal
³² Japan Atomic Energy Agency (JAEA), Tokai-Mura, Japan
³³ Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
³⁴ Agenzia nazionale per le nuove tecnologie (ENEA), Italy
³⁵ Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
³⁶ Dipartimento di Fisica e Astronomia, Università di Bologna, Italy
³⁷ INFN Laboratori Nazionali di Legnaro, Italy
³⁸ Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
³⁹ Department of Physics, University of Trieste, Italy
⁴⁰ Consiglio Nazionale delle Ricerche, Bari, Italy
⁴¹ Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Italy
⁴² Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
⁴³ University of Granada, Spain
⁴⁴ University of Vienna, Faculty of Physics, Vienna, Austria
⁴⁵ Department of Physics, University of Basel, Switzerland
⁴⁶ Centre for Astrophysics Research, University of Hertfordshire, United Kingdom
⁴⁷ Bhabha Atomic Research Centre (BARC), India
⁴⁸ Helmholtz-Zentrum Dresden-Rossendorf, Germany
⁴⁹ Australian National University, Canberra, Australia

Published online: 26 May 2023

Abstract

The neutron capture cross section of ²⁴¹Am is an important quantity for nuclear energy production and fuel cycle scenarios. Several measurements have been performed in recent years with the aim to reduce existing uncertainties in evaluated data. Two previous measurements, performed at the 185 m flight-path station EAR1 of the neutron time-of-flight facility n_TOF at CERN, have permitted to substantially extend the resolved resonance region, but suffered in the near-thermal energy range from the unfavorable signal-to-background ratio resulting from the combination of the high radioactivity of ²⁴¹Am and the rather low thermal neutron flux. The here presented ²⁴¹Am(n,γ) measurement, performed with C₆D₆ liquid scintillator gamma detectors at the 20 m flight-path station EAR2 of the n_TOF facility, took advantage of the much higher neutron flux. The current status of the analysis of the data, focussed on the low-energy region, will be described here.

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