Neutron-induced fission cross section of U-234 and Np-237 measured at the CERN Neutron Time-of-Flight (n_TOF) facility
Author
Paradela, C.
Tassan-Got, L.
Audouin, L.
Berthier, B.
Duran, I.
Ferrant, L.
Isaev, S.
Le Naour, C.
Stephan, C.
Tarrio, D.
Trubert, D.
Abbondanno, U.
Aerts, G.
Alvarez, H.
Alvarez-Velarde, F.
Andriamonje, S.
Andrzejewski, J.
Assimakopoulos, P.
Badurek, G.
Baumann, P.
Becvar, F.
Berthoumieux, E.
Calvino, F.
Calviani, M.
Cano-Ott, D.
Capote, R.
Carrapico, C.
Cennini, P.
Chepel, V.
Chiaveri, E.
Colonna, N.
Cortes, G.
Couture, A.
Cox, J.
Dahlfors, M.
David, S.
Dillmann, I.
Domingo-Pardo, C.
Dridi, W.
Eleftheriadis, C.
Embid-Segura, M.
Ferrari, A.
Ferreira-Marques, R.
Fujii, K.
Furman, W.
Goncalves, I.
Gonzalez-Romero, E.
Gramegna, F.
Guerrero, C.
Rauscher, T.
n TOF Collaboration
Attention
2299/12140
Abstract
A high-resolution measurement of the neutron-induced fission cross section of U-234 and Np-237 has been performed at the CERN Neutron Time-of-Flight facility. The cross sections have been determined in a wide energy range from 1 eV to 1 GeV using the evaluated U-235 cross section as reference. In these measurements the energy determination for the U-234 resonances could be improved, whereas previous discrepancies for the Np-237 resonances were confirmed. New cross-section data are provided for high neutron energies that go beyond the limits of prior evaluations, obtaining important differences in the case of Np-237