Integral measurement of the C-12(n, p)B-12 reaction up to 10 GeV

P. Zugec, N. Colonna, D. Bosnar, A. Ventura, A. Mengoni, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, G. Cortes, M. A. Cortes-Giraldo, L. Cosentino, M. Diakaki, C. Domingo-Pardo, R. Dressler, I. Duran, C. Eleftheriadis, A. Ferrari, P. Finocchiaro, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillos, I. F. Goncalves, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, S. Heinitz, D. G. Jenkins, E. Jericha, F. Kaeppeler, D. Karadimos, N. Kivel, M. Kokkoris, M. Krticka, J. Kroll, C. Langer, C. Lederer, H. Leeb, L. S. Leong, S. Lo Meo, R. Losito, A. Manousos, J. Marganiec, T. Martinez, C. Massimi, P. Mastinu, M. Mastromarco, E. Mendoza, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaers, A. Musumarra, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. Quesada, T. Rauscher, R. Reifarth, A. Riego, F. Roman, C. Rubbia, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsinganis, S. Valenta, G. Vannini, V. Variale, P. Vaz, R. Versaci, M. J. Vermeulen, V. Vlachoudis, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Weiss, T. Wright

The integral measurement of the C-12(n, p)B-12 reaction was performed at the neutron time-of-flight facility n_TOF at CERN. The total number of B-12 nuclei produced per neutron pulse of the n_TOF beam was determined using the activation technique in combination with a time-of-flight technique. The cross section is integrated over the n_TOF neutron energy spectrum from reaction threshold at 13.6 MeV to 10 GeV. Having been measured up to 1 GeV on basis of the U-235(n, f) reaction, the neutron energy spectrum above 200 MeV has been re-evaluated due to the recent extension of the cross section reference for this particular reaction, which is otherwise considered a standard up to 200 MeV. The results from the dedicated GEANT4 simulations have been used to evaluate the neutron flux from 1 GeV up to 10 GeV. The experimental results related to the C-12(n, p)B-12 reaction are compared with the evaluated cross sections from major libraries and with the predictions of different GEANT4 models, which mostly underestimate the B-12 production. On the contrary, a good reproduction of the integral cross section derived from measurements is obtained with TALYS-1.6 calculations, with optimized parameters.

Externe Organisation(en)
University of Zagreb, Istituto Nazionale di Fisica Nucleare, Roma, Agenzia Nazl Nuove Tecnol Energia & Sviluppo Econ, Johann Wolfgang Goethe-Universität Frankfurt am Main, University of Lodz, Institut de Physique Nucléaire d'Orsay (IPN), Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Charles University Prague, European Commission, Joint Research Centre, French Atomic Energy Commission (CEA), University of Manchester, European Organization for Nuclear Research (CERN), Universitat Politècnica de Catalunya, Universidade de Lisboa, Universidad de Sevilla, National Technical University of Athens (NTUA), Instituto de Física Corpuscular (IFIC), Paul Scherrer Institute, Universidade de Santiago de Compostela (USC), Aristotle University of Thessaloniki, Bhabha Atom Res Ctr, Bhabha Atomic Research Center, Technische Universität Wien, York University, Karlsruher Institut für Technologie, Università degli Studi di Bologna, Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN HH), Università degli Studi di Catania, University of Hertfordshire, Universität Basel, Australian National University
European Physical Journal A
Anzahl der Seiten
ÖFOS 2012
103014 Kernphysik
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