Neutron-induced fission cross section of Cm-245: New results from data taken at the time-of-flight facility n_TOF

Autor(en)

M Calviani, Moinul Haque Meaze, N Colonna, Javier Praena, Ugo Abbondanno, G Aerts, H Alvarez, Francisco Alvarez-Velarde, Samuel Andriamonje, J Andrzejewski, P Assimakopoulos, Ludmila Audouin, Gerald Badurek, Massimo Barbagallo, P Baumann, Frantisek Becvar, Fabio Belloni, B Berthier, Eric Berthoumieux, Francisco Calvino, Daniel Cano Ott, R Capote, C. Carrapico, Paolo Cennini, Vitaly Y. Chepell, E Chiaveri, Guillem Cortes, Aaron Couture, J Cox, Marcus Dahlfors, S David, I Dillmann, César Domingo-Pardo, W Dridi, I Duran, C Eleftheriadis, M Embid-Segura, L Ferrant, Arnaud Ferrari, Rebelo Ferreira Marques, K Fujii, Walter I. Furman, Stratos Galanopoulos, Giuseppe Giubrone, Isabel Maria Ferro Goncalves, E Gonzalez-Romero, A Goverdovski, F Gramegna, Carlos Guerrero, Frank Gunsing, B Haas, Robert C Haight, Michael Heil, Adonai Herrera-Martinez, M Igashira, E Jericha, Franz Käppeler, Yacine Kadi, Dimitrios Karadimos, D Karamanis, V Ketlerov, M Kerveno, Paul Edward Koehler, V Konovalov, E Kossionides, M Krticka, Christos Lampoudis, Claudia Lederer, Helmut Leeb, Alexandre Lindote, I Lopes, M Lozano, S Lukic, J Marganiec, S Marrone, Trinitario Martinez, Cristian Massimi, P F Mastinu, Emilio Mendoza, Alberto Mengoni, P M Milazzo, C Moreau, Marita Mosconi, Francisco Neves, Heinz Oberhummer, S O'Brien, J Pancin, C Papachristodoulou, C Papadopoulos, Carlos Paradela, Nikolaos Patronis, Andreas Pavlik, Panagiotis Pavlopoulos, L Perrot, M T Pigni, Ralf Plag, A J M Plompen, A Plukis, Agusti Poch, Carmen Pretel Sanchez, Jose Manuel Quesada Molina, Thomas Rauscher, Rene Reifarth, M Rosetti, Carlo Rubbia, Gérard Rudolf, P Rullhusen, José F. Salgado, Conceicao Santos, Lucia Sarchiapone, Raúl Sarmento, Ilias Savvidis, Peter Schillebeeckx, C Stephan, Giuseppe Tagliente, Jose Luis Tain, Laurent Tassan-Got, Luís M N Tavora, R Terlizzi, Gianni Vannini, Vincenzo Variale, Pedro Vaz, A Ventura, D Villamarin - Fernandez, M Vincente - Vincente, Vassilis Vlachoudis, R Vlastou, Friedrich Voss, S Walter, Michael Wiescher, Klaus Wisshak

Abstrakt

The neutron-induced fission cross section of Cm-245 was measured at n_TOF in a wide energy range and with high resolution. The energy dependence, measured in a single measurement from 30 meV to 1 MeV neutron energy, has been determined with 5% accuracy relative to the U-235(n,f) cross section. In order to reduce the uncertainty on the absolute value, the data have been normalized at thermal energy to recent measurements performed at ILL and BR1. In the energy range of overlap, the results are in fair agreement with some previous measurements and confirm, on average, the evaluated cross section in the ENDF/B-VII.0 database, although sizable differences are observed for some important resonances below 20 eV. A similar behavior is observed relative to JENDL/AC-2008, a reactor-oriented database for actinides. The new results contribute to the overall improvement of the databases needed for the design of advanced reactor systems and may lead to refinements of fission models for the actinides.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Istituto Nazionale di Fisica Nucleare (INFN), Roma, Universidad de Sevilla, French Alternative Energies and Atomic Energy Commission (CEA), Universidade de Santiago de Compostela (USC), Centro de Investigaciones Energeticas Medioambientales y Tecnológica, University of Lodz, University of Ioannina, Institut de Physique Nucléaire d'Orsay (IPN), Technische Universität Wien, Centre National de la Recherche Scientifique (CNRS), Strasbourg , Charles University Prague, Centre National De La Recherche Scientifique (CNRS), Universitat Politècnica de Catalunya, International Atomic Energy Agency (IAEA), European Organization for Nuclear Research (CERN), University of Notre Dame, Karlsruher Institut für Technologie, GSI Helmholtzzentrum für Schwerionenforschung, Aristotle University of Thessaloniki, Universidade de Coimbra, Joint Institute for Nuclear Research, National Technical University of Athens (NTUA), Universitat de València, Instituto Tecnológico e Nuclear, Institute of Physics and Power Engineering (IPPE), Los Alamos National Laboratory, Tokyo Institute of Technology (TIT), Oak Ridge National Laboratory , National Centre for Scientific Research Demokritos (NCSR), Pôle universitaire Léonard-de-Vinci, European Commission Joint Research Centre, Universität Basel, Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile, Università degli studi di Pavia, Instituto Superior Técnico, Centre d'Etudes Nucléaires de Bordeaux-Gradignan (CENBG) - IN2P3

Journal

Physical Review C

Band

85

Anzahl der Seiten

10

ISSN

0556-2813

DOI

https://doi.org/10.1103/PhysRevC.85.034616

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik, 103005 Atomphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1c72822d-0b44-47fb-aeef-0e2c35c94c1a