New measurement of the 242Pu(n, γ) cross section at n_TOF-EAR1 for MOX fuels: Preliminary results in the RRR

Lerendegui-Marco, J. and Guerrero, C. and Cortés-Giraldo, M. A. and Quesada, J. M. and Mendoza, E. and Cano-Ott, D. and Eberhardt, K. and Junghans, A. and Aberle, O. and Andrzejewski, J. and Audouin, L. and Bacak, M. and Balibrea, J. and Barbagallo, M. and Bečvář, F. and Berthoumieux, E. and Billowes, J. and Bosnar, Damir and Brown, A. and Caamaño, M. and Calviño, F. and Calviani, M. and Cardella, R. and Casanovas, A. and Cerutti, F. and Chen, Y. H. and Chiaveri, E. and Colonna, N. and Cortés, G. and Cosentino, L. and Damone, L. A. and Diakaki, M. and Domingo-Pardo, C. and Dressler, R. and Dupont, E. and Durán, I. and Fernández-Domínguez, B. and Ferrari, A. and Ferreira, P. and Finocchiaro, P. and Göbel, K. and Gómez-Hornillos, M. B. and García, A. R. and Gawlik, A. and Gilardoni, S. and Glodariu, T. and Gonçalves, I. F. and González, E. and Griesmayer, E. and Gunsing, F. and Harada, H. and Heinitz, S. and Heyse, J. and Jenkins, D. G. and Jericha, E. and Käppeler, F. and Kadi, Y. and Kalamara, A. and Kavrigin, P. and Kimura, A. and Kivel, N. and Kokkoris, M. and Krtička, M. and Kurtulgil, D. and Leal-Cidoncha, E. and Lederer, C. and Leeb, H. and Lo Meo, S. and Lonsdale, S. J. and Macina, D. and Marganiec, J. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Maugeri, E. A. and Mazzone, A. and Mengoni, A. and Milazzo, P. M. and Mingrone, F. and Musumarra, A. and Negret, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Porras, I. and Praena, J. and Radeck, D. and Rauscher, T. and Reifarth, R. and Rout, P. C. and Rubbia, C. and Ryan, J. A. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Schumann, D. and Smith, A. G. and Sosnin, N. V. and Stamatopoulos, A. and Tagliente, G. and Tain, J. L. and Tarifeño-Saldivia, A. and Tassan-Got, L. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Woods, P. J. and Wright, T. and Žugec, Petar (n_TOF Collaboration) (2017) New measurement of the 242Pu(n, γ) cross section at n_TOF-EAR1 for MOX fuels: Preliminary results in the RRR. In: ND 2016: International Conference on Nuclear Data for Science and Technology. EPJ Web of Conferences. No. 146. Art. No.11045, September 11–16, 2016, Bruges, Belgija.

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Abstract

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.

Item Type: Conference or Workshop Item (Lecture)
Keywords: n_TOF, CERN, 242Pu, neutron capture
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © The Authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Divisions: Faculty of Science > Department of Physics
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 20 Nov 2017 09:02
Last Modified: 20 Nov 2017 09:02
URI: http://digre.pmf.unizg.hr/id/eprint/5708

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