Simultaneous measurement of neutron-induced capture and fission reactions at CERN

Author(s)

Carlos Guerrero, Eric Berthoumieux, Daniel Cano Ott, Emilio Mendoza, Samuel Andriamonje, J Andrzejewski, Ludmila Audouin, Massimo Barbagallo, Vicente Bécares, Frantisek Becvar, Fabio Belloni, Jonathan Billowes, Markus Brugger, M Calviani, Francisco Calvino, C. Carrapico, Fabio Cerutti, E Chiaveri, M. Chin, N Colonna, Guillem Cortes, M. A. Cortés-Giraldo, M. Diakaki, Iris Dillmann, César Domingo-Pardo, I Duran, C Eleftheriadis, Manuel Fernández-Ordóñez, Arnaud Ferrari, S. Ganesan, Giuseppe Giubrone, M. Belén Gómez Hornillo, Isabel Maria Ferro Goncalves, E Gonzalez-Romero, F Gramegna, Erich Griesmayer, Frank Gunsing, David Jenkins, E Jericha, Yacine Kadi, Franz Käppeler, Dimitrios Karadimos, Jirí Kroll, M Krticka, Elias Lebbos, Claudia Lederer, Helmut Leeb, Roberto Losito, M Lozano, Athanasios Manousos, J Marganiec, S Marrone, Trinitario Martinez, Cristian Massimi, P F Mastinu, Moinul Haque Meaze, Alberto Mengoni, P M Milazzo, Carlos Paradela, Andreas Pavlik, Jan Perkowski, Ralf Plag, Javier Praena, Jose Manuel Quesada Molina, Thomas Rauscher, Rene Reifarth, Francisco L. Roman, Carlo Rubbia, Raúl Sarmento, Giuseppe Tagliente, Jose Luis Tain, Diego Tarrio, Laurent Tassan-Got, Andrea Tsinganis, Gianni Vannini, Vincenzo Variale, Pedro Vaz, A Ventura, Mark Vermeulen, Vassilis Vlachoudis, R Vlastou, Anton Wallner, Tim Ware, C. Weiß, Tobias Wright

Abstract

The measurement of the capture cross-section of fissile elements, of utmost importance for the design of innovative nuclear reactors and the management of nuclear waste, faces particular difficulties related to the.-ray background generated in the competing fission reactions. At the CERN neutron time-of-flight facility n_TOF we have combined the Total Absorption Calorimeter (TAC) capture detector with a set of three U-235 loaded MicroMegas (MGAS) fission detectors for measuring simultaneously two reactions: capture and fission. The results presented here include the determination of the three detection efficiencies involved in the process: epsilon(TAC)(n, f), epsilon(TAC)(n, gamma) and epsilon(MGAS)(n, f). In the test measurement we have succeeded in measuring simultaneously with a high total efficiency the U-235 capture and fission cross-sections, disentangling accurately the two types of reactions. The work presented here proves that accurate capture cross-section measurements of fissile isotopes are feasible at n_TOF.

Organisation(s)

Isotope Physics

External organisation(s)

Centro de Investigaciones Energeticas Medioambientales y Tecnológica, French Alternative Energies and Atomic Energy Commission (CEA), European Organization for Nuclear Research (CERN), University of Lodz, Institut de Physique Nucléaire d'Orsay (IPN), Istituto Nazionale di Fisica Nucleare (INFN), Roma, Charles University Prague, University of Manchester, Universitat Politècnica de Catalunya, Instituto Superior Técnico, Universidad de Sevilla, National Technical University of Athens (NTUA), Technische Universität München, GSI Helmholtzzentrum für Schwerionenforschung, Universidade de Santiago de Compostela (USC), Aristotle University of Thessaloniki, Bhabha Atomic Research Center, Universitat de València, Nuclear and Technological Institute (ITN), Technische Universität Wien, University of York, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Universität Basel, Centre National De La Recherche Scientifique (CNRS)

Journal

European Physical Journal A

Volume

48

No. of pages

9

ISSN

1434-6001

DOI

https://doi.org/10.1140/epja/i2012-12029-2

Publication date

2012

Peer reviewed

Yes

Austrian Fields of Science 2012

103014 Nuclear physics, 103005 Atomic physics

Portal url

https://ucrisportal.univie.ac.at/en/publications/58d5f716-a293-453a-9616-bd9082ba6762