Study of photon strength functions of 241Pu and 245Cm from neutron capture measurements

E. Mendoza; V. Alcayne; D Cano-Ott; A. Kimura; A. V. Skarbeli; O. Aberle; S. Amaducci; J. Andrzejewski; L. Audouin; V Babiano-Suarez; M. Bacak; M. Barbagallo; V. Bécares; F. Bečvář; G. Bellia; E. Berthoumieux; J. Billowes; D. Bosnar; A. S. Brown; M. Busso; M. Caamaño; L. Caballero; M. Calviani; F. Calviño; A. Casanovas; F. Cerutti; Y. H. Chen; E. Chiaveri; N. Colonna; G. P. Cortés; M. A. Cortés-Giraldo; L. Cosentino; S. Cristallo; L. A. Damone; M. Diakaki; M. Dietz; C Domingo-Pardo; R. Dressler; E. Dupont; I. Durán; Z. Eleme; B. Fernández-Domíngez; A. Ferrari; I. Ferro-Gonçalves; P. Finocchiaro; V. Furman; R. Garg; A. Gawlik; S. Gilardoni; T. Glodariu; K. Göbel; E. González-Romero; C. Guerrero; F. Gunsing; S. Heinitz; J. Heyse; D. G. Jenkins; E. Jericha; Y. Kadi; F. Käppeler; N. Kivel; M. Kokkoris; Y. Kopatch; M. Krtička; D. Kurtulgil; I. Ladarescu; C Lederer-Woods; J Lerendegui-Marco; S. Lo Meo; S.-J. Lonsdale; D. Macina; A. Manna; T. Martínez; A. Masi; C. Massimi; P. F. Mastinu; M. Mastromarco; F. Matteucci; E. Maugeri; A. Mazzone; 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. Piersanti; I. Porras; J. Praena; J. M. Quesada; D. Radeck; D. Ramos Doval; R. Reifarth; D. Rochman; C. Rubbia; M. Sabaté-Gilarte; A. Saxena; P. Schillebeeckx; D. Schumann; A. G. Smith; N. Sosnin; A. Stamatopoulos; G. Tagliente; J. L. Tain; Z. Talip; A. E. 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. J. Wright; P. Žugec

doi:10.1051/epjconf/202023901015

Proceedings

Open Access

EPJ Web of Conferences 239, 01015 (2020)
https://doi.org/10.1051/epjconf/202023901015

Study of photon strength functions of ²⁴¹Pu and ²⁴⁵Cm from neutron capture measurements

E. Mendoza¹^*, V. Alcayne¹, D Cano-Ott¹, A. Kimura², A. V. Skarbeli¹, O. Aberle³, S. Amaducci⁴^,5, J. Andrzejewski⁶, L. Audouin⁷, V Babiano-Suarez⁸, M. Bacak³^,9^,10, M. Barbagallo³^,11, V. Bécares¹, F. Bečvář¹², G. Bellia⁴^,5, E. Berthoumieux¹⁰, J. Billowes¹³, D. Bosnar¹⁴, A. S. Brown¹⁵, M. Busso¹⁶^,17, M. Caamaño¹⁸, L. Caballero⁸, M. Calviani³, F. Calviño¹⁹, A. Casanovas¹⁹, F. Cerutti³, Y. H. Chen⁷, E. Chiaveri¹³^,20^,3, N. Colonna¹¹, G. P. Cortés¹⁹, M. A. Cortés-Giraldo²⁰, L. Cosentino⁴, S. Cristallo¹⁶^,21, L. A. Damone¹¹^,22, M. Diakaki²³, M. Dietz²⁴, C Domingo-Pardo⁸, R. Dressler²⁵, E. Dupont¹⁰, I. Durán¹⁸, Z. Eleme²⁶, B. Fernández-Domíngez¹⁸, A. Ferrari³, I. Ferro-Gonçalves²⁷, P. Finocchiaro⁴, V. Furman²⁸, R. Garg²⁴, A. Gawlik⁶, S. Gilardoni³, T. Glodariu²⁹, K. Göbel³⁰, E. González-Romero¹, C. Guerrero²⁰, F. Gunsing¹⁰, S. Heinitz²⁵, J. Heyse³¹, D. G. Jenkins¹⁵, E. Jericha⁹, Y. Kadi³, F. Käppeler³², N. Kivel²⁵, M. Kokkoris²³, Y. Kopatch²⁸, M. Krtička¹², D. Kurtulgil³⁰, I. Ladarescu⁸, C Lederer-Woods²⁴, J Lerendegui-Marco²⁰, S. Lo Meo³³^,34, S.-J. Lonsdale²⁴, D. Macina³, A. Manna³⁴^,35, T. Martínez¹, A. Masi³, C. Massimi³⁴^,35, P. F. Mastinu³⁶, M. Mastromarco³^,13, F. Matteucci³⁷^,38, E. Maugeri²⁵, A. Mazzone¹¹^,39, A. Mengoni³³^,34, V. Michalopoulou²³, P. M. Milazzo³⁷, F. Mingrone³, A. Musumarra⁴^,5, A. Negret²⁹, R. Nolte⁴⁰, F. Ogállar⁴¹, A. Oprea²⁹, N. Patronis²⁶, A. Pavlik⁴², J. Perkowski⁶, L. Piersanti¹⁶^,21, I. Porras⁴¹, J. Praena⁴¹, J. M. Quesada²⁰, D. Radeck⁴⁰, D. Ramos Doval⁷, R. Reifarth³⁰, D. Rochman²⁵, C. Rubbia³, M. Sabaté-Gilarte²⁰^,3, A. Saxena⁴³, P. Schillebeeckx³¹, D. Schumann²⁵, A. G. Smith¹³, N. Sosnin¹³, A. Stamatopoulos²³, G. Tagliente¹¹, J. L. Tain⁸, Z. Talip²⁵, A. E. Tarifeño-Saldivia¹⁹, L Tassan-Got³^,23^,7, P. Torres-Sánchez⁴¹, A. Tsinganis³, J. Ulrich²⁵, S. Urlass³^,44, S. Valenta¹², G. Vannini³⁴^,35, V. Variale¹¹, P. Vaz²⁷, A. Ventura³⁴, V. Vlachoudis³, R. Vlastou²³, A. Wallner⁴⁵, P. J. Woods²⁴, T. J. Wright¹³ and P. Žugec¹⁴

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

^* e-mail: emilio.mendoza@ciemat.es

Published online: 30 September 2020

Abstract

We have measured the γ-rays following neutron capture on ²⁴⁰Pu and ²⁴⁴ Cm at the n_TOF facility at CERN with the Total Absorption Calorimeter (TAC) and with C6D6 organic scintillators. The TAC is made of 40 BaF2 crystals operating in coincidence and covering almost the entire solid angle. This allows to obtain information concerning the energy spectra and the multiplicity of the measured capture γ-ray cascades. Additional information is also obtained from the C6D6 detectors. We have analyzed the measured data in order to draw conclusions about the Photon Strength Functions (PSFs) of ²⁴¹Pu and ²⁴⁵Cm below their neutron separation energies. The analysis has been performed by fitting the PSFs to the experimental results, using the differential evolution method, in order to find neutron capture cascades capable of reproducing at the same time a great variety of deposited energy spectra.

© The Authors, published by EDP Sciences, 2020

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.

Conference announcements

Exotic Hadron Spectroscopy
19-21 April 2023
Durham, UK

PONYS - EPS Young Minds Leadership Meeting
19-20 May 2023
Naples, Italy

Advances in Radioactive Isotope Science (ARIS)
4-9 June 2023
Avignon, France

20th International Conference on Hadron Spectroscopy and Structure (HADRON 2023)
5-9 June 2023
Genova, Italy

SFP Congress
3-7 July 2023
Paris, France