Measurement of the 242Pu(n, γ) cross section from thermal to 500 keV at the Budapest research reactor and CERN n_TOF-EAR1 facilities

J Lerendegui-Marco; C. Guerrero; E. Mendoza; J. M. Quesada; K. Eberhardt; A. Junghans; M. Krtiička; T. Belgya; B. Maróti; O. Aberle; J. Andrzejewski; L. Audouin; V. Bécares; M. Bacak; J. Balibrea; M. Barbagallo; S. Barros; F. Bečvář; C. Beinrucker; E. Berthoumieux; J. Billowes; D. Bosnar; M. Brugger; M. Caamaño; F. Calviño; M. Calviani; D Cano-Ott; R. Cardella; A. Casanovas; D. M. Castelluccio; F. Cerutti; Y. H. Chen; E. Chiaveri; N. Colonna; G. Cortés; M. A. Cortés-Giraldo; L. Cosentino; L. A. Damone; M. Diakaki; C Domingo-Pardo; R. Dressler; E. Dupont; I. Durán; B. Fernández-Domínguez; A. Ferrari; P. Ferreira; P. Finocchiaro; V. Furman; K. Göbel; A. R. García; A. Gawlik; T. Glodariu; I. F. Gonçalves; E. González-Romero; A. Goverdovski; E. Griesmayer; F. Gunsing; H. Harada; T. Heftrich; S. Heinitz; J. Heyse; D. G. Jenkins; E. Jericha; F. Käppeler; Y. Kadi; T. Katabuchi; P. Kavrigin; V. Ketlerov; V. Khryachkov; A. Kimura; N. Kivel; I. Knapova; M. Kokkoris; E Leal-Cidoncha; C. Lederer; H. Leeb; S. Lo Meo; S. J. Lonsdale; R. Losito; D. Macina; J. Marganiec; T. Martínez; C. Massimi; P. Mastinu; M. Mastromarco; F. Matteucci; E. A. Maugeri; A. Mengoni; P. M. Milazzo; F. Mingrone; M. Mirea; S. Montesano; A. Musumarra; R. Nolte; A. Oprea; N. Patronis; A. Pavlik; J. Perkowski; J. I. Porras; J. Praena; K. Rajeev; T. Rauscher; R. Reifarth; A Riego-Perez; P. C. Rout; C. Rubbia; J. A. Ryan; M. Sabaté-Gilarte; A. Saxena; P. Schillebeeckx; S. Schmidt; D. Schumann; P. Sedyshev; A. G. Smith; A. Stamatopoulos; G. Tagliente; J. L. Tain; A. Tarifeño-Saldivia; L Tassan-Got; A. Tsinganis; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; D. Vescovi; V. Vlachoudis; R. Vlastou; A. Wallner; S. Warren; M. Weigand; C. Weiss; C. Wolf; P. J. Woods; T. Wright; P. Žugec

doi:10.1051/epjconf/202023901019

All issues

Volume 239 (2020)

EPJ Web Conf., 239 (2020) 01019

Abstract

Open Access

Issue		EPJ Web Conf. Volume 239, 2020 ND 2019: International Conference on Nuclear Data for Science and Technology


Article Number		01019
Number of page(s)		6
Section		Nuclear Reaction Measurements
DOI		https://doi.org/10.1051/epjconf/202023901019
Published online		30 September 2020

EPJ Web of Conferences 239, 01019 (2020)
https://doi.org/10.1051/epjconf/202023901019

Measurement of the ²⁴²Pu(n, γ) cross section from thermal to 500 keV at the Budapest research reactor and CERN n_TOF-EAR1 facilities

J Lerendegui-Marco¹^*, C. Guerrero¹^,2, E. Mendoza³, J. M. Quesada¹, K. Eberhardt⁴, A. Junghans⁵, M. Krtiička⁶, T. Belgya⁷, B. Maróti⁷, O. Aberle⁸, J. Andrzejewski⁹, L. Audouin¹⁰, V. Bécares³, M. Bacak¹¹, J. Balibrea³, M. Barbagallo¹², S. Barros¹³, F. Bečvář⁶, C. Beinrucker¹⁴, E. Berthoumieux¹⁵, J. Billowes¹⁶, D. Bosnar¹⁷, M. Brugger⁸, M. Caamaño¹⁸, F. Calviño¹⁹, M. Calviani⁸, D Cano-Ott³, R. Cardella⁸, A. Casanovas¹⁹, D. M. Castelluccio²⁰^,21, F. Cerutti⁸, Y. H. Chen¹⁰, E. Chiaveri⁸, N. Colonna¹², G. Cortés¹⁹, M. A. Cortés-Giraldo¹, L. Cosentino²², L. A. Damone¹²^,23, M. Diakaki¹⁵, C Domingo-Pardo²⁴, R. Dressler²⁵, E. Dupont¹⁵, I. Durán¹⁸, B. Fernández-Domínguez¹⁸, A. Ferrari⁸, P. Ferreira¹³, P. Finocchiaro²², V. Furman²⁶, K. Göbel¹⁴, A. R. García³, A. Gawlik⁹, T. Glodariu^†27, I. F. Gonçalves¹³, E. González-Romero³, A. Goverdovski²⁸, E. Griesmayer¹¹, F. Gunsing¹⁵^,8, H. Harada²⁹, T. Heftrich¹⁴, S. Heinitz²⁵, J. Heyse³⁰, D. G. Jenkins³¹, E. Jericha¹¹, F. Käppeler³², Y. Kadi⁸, T. Katabuchi³³, P. Kavrigin¹¹, V. Ketlerov²⁸, V. Khryachkov²⁸, A. Kimura²⁹, N. Kivel²⁵, I. Knapova⁶, M. Kokkoris³⁴, E Leal-Cidoncha¹⁸, C. Lederer³⁵, H. Leeb¹¹, S. Lo Meo²⁰^,21, S. J. Lonsdale³⁵, R. Losito⁸, D. Macina⁸, J. Marganiec⁹, T. Martínez³, C. Massimi²¹^,36, P. Mastinu³⁷, M. Mastromarco¹², F. Matteucci³⁸^,39, E. A. Maugeri²⁵, A. Mengoni²⁰, P. M. Milazzo³⁸, F. Mingrone²¹, M. Mirea²⁷, S. Montesano⁸, A. Musumarra²²^,40, R. Nolte⁴¹, A. Oprea²⁷, N. Patronis⁴², A. Pavlik⁴³, J. Perkowski⁹, J. I. Porras⁸^,44, J. Praena¹^,44, K. Rajeev⁴⁵, T. Rauscher⁴⁶^,47, R. Reifarth¹⁴, A Riego-Perez¹⁹, P. C. Rout⁴⁵, C. Rubbia⁸, J. A. Ryan¹⁶, M. Sabaté-Gilarte⁸^,1, A. Saxena⁴⁵, P. Schillebeeckx³⁰, S. Schmidt¹⁴, D. Schumann²⁵, P. Sedyshev²⁶, A. G. Smith¹⁶, A. Stamatopoulos³⁴, G. Tagliente¹², J. L. Tain²⁴, A. Tarifeño-Saldivia²⁴, L Tassan-Got¹⁰, A. Tsinganis³⁴, S. Valenta⁶, G. Vannini²¹^,36, V. Variale¹², P. Vaz¹³, A. Ventura²¹, D. Vescovi¹²^,48, V. Vlachoudis⁸, R. Vlastou³⁴, A. Wallner⁴⁹, S. Warren¹⁶, M. Weigand¹⁴, C. Weiss⁸^,6, C. Wolf¹⁴, P. J. Woods³⁵, T. Wright¹⁶, P. Žugec¹⁷^,8 and the n_TOF Collaboration

¹ Dpto. Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Sevilla, Spain
² Centro Nacional de Aceleradores(CNA), Seville, Spain
³ Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
⁴ Johannes Gutenberg Universität Mainz, Mainz, Germany
⁵ Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
⁶ Charles University, Prague, Czech Republic
⁷ Nuclear Analysis and Radiography Department, Hungarian Academy of Sciences, Budapest, Hungary
⁸ European Organization for Nuclear Research (CERN), Switzerland
⁹ University of Lodz, Poland
¹⁰ Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
¹¹ Technische Universität Wien, Austria
¹² Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
¹³ Instituto Superior Técnico, Lisbon, Portugal
¹⁴ Goethe University Frankfurt, Germany
¹⁵ CEA Irfu, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
¹⁶ University of Manchester, United Kingdom
¹⁷ Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
¹⁸ University of Santiago de Compostela, Spain
¹⁹ Universitat Politècnica de Catalunya, Spain
²⁰ Agenzia nazionale per le nuove tecnologie (ENEA), Bologna, Italy
²¹ Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
²² INFN Laboratori Nazionali del Sud, Catania, Italy
²³ Dipartimento di Fisica, Università degli Studi di Bari, Italy
²⁴ Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain
²⁵ Paul Scherrer Institut (PSI), Villingen, Switzerland
²⁶ Joint Institute for Nuclear Research (JINR), Dubna, Russia
²⁷ Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
²⁸ Institute of Physics and Power Engineering (IPPE), Obninsk, Russia
²⁹ Japan Atomic Energy Agency (JAEA), Tokai-mura, Japan
³⁰ European Commission, Joint Research Centre, Geel, Retieseweg 111, B-2440 Geel, Belgium
³¹ University of York, United Kingdom
³² Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
³³ Tokyo Institute of Technology, Japan
³⁴ National Technical University of Athens, Greece
³⁵ School of Physics and Astronomy, University of Edinburgh, United Kingdom
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 Dipartimento di Fisica e Astronomia, Università di Catania, Italy
⁴¹ Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
⁴² University of Ioannina, Greece
⁴³ University of Vienna, Faculty of Physics, Vienna, Austria
⁴⁴ University of Granada, Spain
⁴⁵ Bhabha Atomic Research Centre (BARC), India
⁴⁶ Centre for Astrophysics Research, University of Hertfordshire, United Kingdom
⁴⁷ Department of Physics, University of Basel, Switzerland
⁴⁸ Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Italy
⁴⁹ Australian National University, Canberra, Australia

^* e-mail: jlerendegui@us.es

Published online: 30 September 2020

Abstract

The design and operation of innovative nuclear systems requires a better knowledge of the capture and fission cross sections of the Pu isotopes. For the case of capture on ²⁴²Pu, a reduction of the uncertainty in the fast region down to 8-12% is required. Moreover, aiming at improving the evaluation of the fast energy range in terms of average parameters, the OECD NEA High Priority Request List (HPRL) requests high-resolution capture measurements with improved accuracy below 2 keV. The current uncertainties also affect the thermal point, where previous experiments deviate from each other by 20%. A fruitful collaboration betwen JGU Mainz and HZ Dresden-Rossendorf within the EC CHANDA project resulted in a ²⁴²Pu sample consisting of a stack of seven fission-like targets making a total of 95(4) mg of ²⁴²Pu electrodeposited on thin (11.5 μm) aluminum backings. This contribution presents the results of a set of measurements of the ²⁴²Pu(n, γ) cross section from thermal to 500 keV combining different neutron beams and techniques. The thermal point was determined at the Budapest Research Reactor by means of Neutron Activation Analysis and Prompt Gamma Analysis, and the resolved (1 eV - 4 keV) and unresolved (1 - 500 keV) resonance regions were measured using a set of four Total Energy detectors at the CERN n_TOF-EAR1.

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