International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07496

The neutron capture cross sections of ²³⁷Np(n,γ) and ²⁴⁰Pu(n,γ) and its relevance in the transmutation of nuclear waste

C. Guerrero¹, U. Abbondanno², G. Aerts³, H. Álvarez⁴, F. Álvarez-Velarde¹, S. Andriamonje³, J. Andrzejewski⁵, P. Assimakopoulos⁶, L. Audouin⁷, G. Badurek⁸, P. Baumann⁹, F. Becvár¹⁰, E. Berthoumieux³, F. Calviño¹¹, M. Calviani^{12, 13}, D. Cano-Ott¹, R. Capote^{14, 15}, C. Carrapiço^{3, 16}, P. Cennini¹⁷, V. Chepel¹⁸, E. Chiaveri¹⁷, N. Colonna¹⁹, G. Cortes²⁰, A. Couture²¹, J. Cox²¹, M. Dahlfors¹⁷, S. David⁷, I. Dillmann²², C. Domingo-Pardo^{22, 23}, W. Dridi³, I. Duran⁴, C. Eleftheriadis²⁴, M. Embid-Segura¹, L. Ferrant⁷, A. Ferrari¹⁷, R. Ferreira-Marques¹⁸, K. Fujii², W. Furman²⁵, I. Goncalves¹⁸, E. González-Romero¹, F. Gramegna¹², F. Gunsing³, B. Haas²⁶, R. Haight²⁷, M. Heil²², A. Herrera-Martinez¹⁷, M. Igashira²⁸, E. Jericha⁸, F. Käppeler²², Y. Kadi¹⁷, D. Karadimos⁶, D. Karamanis⁶, M. Kerveno⁹, P. Koehler²⁹, E. Kossionides³⁰, M. Krticka¹⁰, C. Lampoudis^{3, 24}, H. Leeb⁸, A. Lindote¹⁸, I. Lopes¹⁸, M. Lozano¹⁵, S. Lukic⁹, J. Marganiec⁵, S. Marrone¹⁹, T. Martínez¹, C. Massimi³¹, P. Mastinu¹², A. Mengoni^{14, 17}, P.M. Milazzo², C. Moreau², M. Mosconi²², F. Neves¹⁸, H. Oberhummer⁸, S. O'Brien²¹, J. Pancin³, C. Papachristodoulou⁶, C. Papadopoulos³², C. Paradela⁴, N. Patronis⁶, A. Pavlik³³, P. Pavlopoulos³⁴, L. Perrot³, M.T. Pigni⁸, R. Plag²², A. Plompen³⁵, A. Plukis³, A. Poch²⁰, J. Praena¹², C. Pretel²⁰, J. Quesada¹⁵, T. Rauscher³⁶, R. Reifarth²⁷, C. Rubbia³⁷, G. Rudolf⁹, P. Rullhusen³⁵, J. Salgado¹⁶, C. Santos¹⁶, L. Sarchiapone¹⁷, I. Savvidis²⁴, C. Stephan⁷, G. Tagliente¹⁹, J.L. Tain²³, L. Tassan-Got⁷, L. Tavora¹⁶, R. Terlizzi¹⁹, G. Vannini³¹, P. Vaz¹⁶, A. Ventura³⁸, D. Villamarin¹, M.C. Vincente¹, V. Vlachoudis¹⁷, R. Vlastou³², F. Voss²², S. Walter²², M. Wiescher²¹ and K. Wisshak<sup>22

1</sup>  Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, Madrid, Spain
²  Istituto Nazionale di Fisica Nucleare, Trieste, Italy
³  CEA/Saclay-DSM/DAPNIA, Gif-sur-Yvette, France
⁴  Universidade de Santiago de Compostela, Spain
⁵  University of Lodz, Lodz, Poland
⁶  University of Ioannina, Greece
⁷  Centre National de la Recherche Scientifique/IN2P3-IPN, Orsay, France
⁸  Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Austria
⁹  Centre National de la Recherche Scientifique/IN2P3-IReS, Strasbourg, France
¹⁰  Charles University, Prague, Czech Republic
¹¹  Universidad Politecnica de Madrid, Spain
¹²  Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Italy
¹³  Dipartimento di Fisica, Università di Padova, Italy
¹⁴  International Atomic Energy Agency (IAEA), Nuclear Data Section, Vienna, Austria,
¹⁵  Universidad de Sevilla, Spain
¹⁶  Instituto Tecnológico e Nuclear (ITN), Lisbon, Portugal
¹⁷  CERN, Geneva, Switzerland
¹⁸  LIP - Coimbra & Departamento de Fisica da Universidade de Coimbra, Portugal
¹⁹  Istituto Nazionale di Fisica Nucleare, Bari, Italy
²⁰  Universitat Politecnica de Catalunya, Barcelona, Spain
²¹  University of Notre Dame, Notre Dame, USA
²²  Forschungszentrum Karlsruhe GmbH (FZK), Institut für Kernphysik, Germany
²³  Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Spain
²⁴  Aristotle University of Thessaloniki, Greece
²⁵  Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, Russia
²⁶  Centre National de la Recherche Scientifique/IN2P3-CENBG, Bordeaux, France
²⁷  Los Alamos National Laboratory, New Mexico, USA
²⁸  Tokyo Institute of Technology, Tokyo, Japan
²⁹  Oak Ridge National Laboratory, Physics Division, Oak Ridge, USA
³⁰  NCSR, Athens, Greece
³¹  Dipartimento di Fisica, Università di Bologna, and Sezione INFN di Bologna, Italy
³²  National Technical University of Athens, Greece
³³  Institut für Isotopenforschung und Kernphysik, Universität Wien, Austria
³⁴  Pôle Universitaire Léonard de Vinci, Paris-La Défense, France
³⁵  CEC-JRC-IRMM, Geel, Belgium
³⁶  Department of Physics-University of Basel, Switzerland
³⁷  Università degli Studi Pavia, Pavia, Italy
³⁸  ENEA, Bologna, Italy

carlos.guerrero@ciemat.es

Published online: 21 May 2008

Abstract
Neutron capture cross sections of actinides are of great relevance for the Transmutation of Nuclear Waste in Accelerator Driven Systems (ADS) and Generation-IV reactors. The neutron capture cross sections of ²³⁷Np and ²⁴⁰Pu were measured at the n_TOF facility with a Total Absorption Calorimeter. The data have been analyzed with the SAMMY code. The corresponding covariance matrices have been generated. The final cross sections are presented and compared to the previously existing ones.

© CEA 2008