New measurement of the ²⁴²Pu(n,γ) cross section at n-TOF-EAR1 for MOX fuels

Autor(en)

J. Lerendegui-Marco, C. Guerrero, M. A. Cortés-Giraldo, J. M. Quesada, E. Mendoza, D. Cano-Ott, K. Eberhardt, A. Junghans, O. Aberle, J. Andrzejewski, L. Audouin, M. Bacak, J. Balibrea, M. Barbagallo, F. Bečvář, E. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Caamaño, F. Calviño, M. Calviani, R. Cardella, A. Casanovas, F. Cerutti, Y. H. Chen, E. Chiaveri, N. Colonna, G. Cortés, 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, K. Göbel, M. B. Gómez-Hornillos, A. R. García, A. Gawlik, S. Gilardoni, T. Glodariu, I. F. Gonçalves, E. González, E. Griesmayer, F. Gunsing, H. Harada, S. Heinitz, J. Heyse, D. G. Jenkins, E. Jericha, F. Käppeler, Y. Kadi, A. Kalamara, P. Kavrigin, A. Kimura, N. Kivel, M. Kokkoris, M. Krtička, D. Kurtulgil, E. Leal-Cidoncha, C. Lederer, H. Leeb, S. Lo Meo, S. J. Lonsdale, D. Macina, J. Marganiec, T. Martínez, A. Masi, C. Massimi, P. Mastinu, M. Mastromarco, E. A. Maugeri, A. Mazzone, A. Mengoni, P. M. Milazzo, F. Mingrone, A. Musumarra, A. Negret, R. Nolte, A. Oprea, N. Patronis, A. Pavlik, J. Perkowski, I. Porras, J. Praena, D. Radeck, T. Rauscher, R. Reifarth, P. C. Rout, C. Rubbia, J. A. Ryan, M. Sabaté-Gilarte, A. Saxena, P. Schillebeeckx, D. Schumann, A. G. Smith, N. V. Sosnin, A. Stamatopoulos, G. Tagliente, J. L. Tain, A. Tarifeño-Saldivia, L. Tassan-Got, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, V. Vlachoudis, R. Vlastou, A. Wallner, S. Warren, P. J. Woods, T. Wright, P. Žugec

Abstrakt

The spent fuel of current nuclear reactors contains fissile plutonium isotopes that can be combined with ²³⁸U to make mixed oxide (MOX) fuel. In this way the Pu from spent fuel is used in a new reactor cycle, contributing to the long-term sustainability of nuclear energy. The use of MOX fuels in thermal and fast reactors requires accurate capture and fission cross sections. For the particular case of ²⁴²Pu, the previous neutron capture cross section measurements were made in the 70's, providing an uncertainty of about 35% in the keV region. In this context, the Nuclear Energy Agency recommends in its "High Priority Request List" and its report WPEC-26 that the capture cross section of ²⁴²Pu should be measured with an accuracy of at least 7-12% in the neutron energy range between 500 eV and 500 keV. This work presents a brief description of the measurement performed at n-TOF-EAR1, the data reduction process and the first ToF capture measurement on this isotope in the last 40 years, providing preliminary individual resonance parameters beyond the current energy limits in the evaluations, as well as a preliminary set of average resonance parameters.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Universidad de Sevilla, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Johannes Gutenberg-Universität Mainz, Forschungszentrum Dresden Rossendorf (FZD), European Organization for Nuclear Research (CERN), University of Lodz, Université Paris-Saclay, Technische Universität Wien, IRFU, Istituto Nazionale di Fisica Nucleare, Roma, Sezione di Bologna, Charles University Prague, Manchester Metropolitan University, University of Zagreb, University of York, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Università degli Studi di Bari, Universitat de València, Paul Scherrer Institute, Associação EURATOM/IST, Johann Wolfgang Goethe-Universität Frankfurt am Main, Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN HH), Japan Atomic Energy Agency, European Commission, Joint Research Centre, Karlsruher Institut für Technologie, National Technical University of Athens (NTUA), University of Edinburgh, ENEA Centro Ricerche Bologna, Physikalisch-Technische Bundesanstalt (PTB), Università degli Studi di Catania, Università degli Studi di Bologna, Sezione di Legnaro, Consiglio Nazionale delle Ricerche (CNR), Padua, University of Ioannina, Universidad de Granada, Universität Basel, Centre for Astrophysics Research, University of Hertfordshire, Bhabha Atomic Research Centre, Australian National University

Anzahl der Seiten

4

DOI

https://doi.org/10.1051/epjconf/201714611045

Publikationsdatum

09-2017

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik

ASJC Scopus Sachgebiete

Physics and Astronomy(all)

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/new-measurement-of-the-242pun-cross-section-at-ntofear1-for-mox-fuels(df4153e4-09eb-438f-bdc6-b2ec9b32e688).html