Measurements of high-energy neutron-induced fission of (nat)Pb and (209)Bi
Author
Tarrio, D.
Tassan-Got, L.
Audouin, L.
Berthier, B.
Duran, I.
Ferrant, L.
Isaev, S.
Le Naour, C.
Paradela, C.
Stephan, C.
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
2299/14883
Abstract
The CERN Neutron Time-Of-Flight (n_TOF) facility is well suited to measure low cross sections as those of neutron-induced fission in subactinides. The cross section ratios of (nat)Pb and (209)Bi relative to (235)U and (238)U were measured using PPAC detectors and a fragment coincidence method that allows us to identify the fission events. The present experiment provides first results for neutron-induced fission up to 1 GeV. Good agreement is found with previous experimental data below 200 MeV. The comparison with proton-induced fission indicates that the limiting regime where neutron-induced and proton-induced fission reach equal cross sections is close to 1 GeV.