High-accuracy U233(n,f) cross-section measurement at the white-neutron source n_TOF from near-thermal to 1 MeV neutron energy
Year: 2009
Type: article
Abstract: The $^{233}\mathrm{U}(n,f)$ cross section has been measured at the white neutron source n_TOF in a wide energy range with a dedicated fission ionization chamber. We report here the results from $~30$ meV to $1$ MeV neutron energy. The $^{233}\mathrm{U}(n,f)$ cross section has been determined relative to a reference sample of $^{235}\mathrm{U}(n,f)$ measured simultaneously with the same detector. The very high instantaneous neutron flux and the intrinsically low background of the n_TOF installation result in an accuracy around $3%$ in the whole energy range, while the energy resolution of the neutron beam allows for an accurate description of the fission cross section by means of $R$-matrix analysis over a wide energy range. The results are, in general, in good agreement with the most recent high-accuracy measurement of this fission cross section, over the more limited range of the previous measurements, and indicated that even the latest evaluations underestimate the cross section in the epithermal region. The present high-quality data provide the basis for a more precise evaluation of the $^{233}\mathrm{U}$ fission cross section and for improving the reliability of databases needed for the design of new energy systems based on the Th/U cycle.
Source: Physical Review C
Authors: M. Calviani, J. Praena, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, F. Belloni, B. Berthier, E. Berthoumieux, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, A. Goverdovski, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak
Institutions: University of Padua, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Universidade de Santiago de Compostela, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, University of Łódź, University of Ioannina, Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Physique Nucléaire d’Orsay, TU Wien, Charles University, University of Trieste, Universidad Politécnica de Madrid, International Atomic Energy Agency, Universidad de Sevilla, European Organization for Nuclear Research, University of Coimbra, Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Universitat Politècnica de Catalunya, University of Notre Dame, Universitat de València, Instituto de Física Corpuscular, Aristotle University of Thessaloniki, Joint Institute for Nuclear Research, Institute for Physics and Power Engineering, Laboratoire de Physique des deux infinis Bordeaux, Los Alamos National Laboratory, Tokyo Institute of Technology, Oak Ridge National Laboratory, National Centre of Scientific Research "Demokritos", Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, University of Bologna, National Technical University of Athens, University of Vienna, Pôle Léonard de Vinci, Joint Research Center, University of Basel, National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA Bologna Research Centre, University of Pavia
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: European Commission
Award: G7751841293
OpenAlex ID: W1997117393