The Np-237(n,f) cross section at the CERN n-TOF facility

Karadimos, D.; Vlastou, R.; Vlachoudis, V.; Pavlopoulos, P.; Konovalov, V.; Diakaki, M.; Abbondanno, U.; Aerts, G.; Alvarez, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Benlliure, J.; Berthoumieux, E.; Calvino, F.; Cano-Ott, D.; Capote, R.; Carrillo de Albornoz, A.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Cortina, D.; Couture, A.; Cox, J.; David, S.; Dolfini, R.; Domingo-Pardo, C.; Dorochenko, A.; Dridi, W.; Duran, I.; Eleftheriadis, Ch.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fitzpatrick, L.; Frais-Koelbl, H.; Fujii, K.; Furman, W.; Goncalves, I.; Gallino, R.; Cennini, P.; Gonzalez-Romero, E.; Rauscher, T.; N TOF Collaboration

Author

Karadimos, D.

Vlastou, R.

Vlachoudis, V.

Pavlopoulos, P.

Konovalov, V.

Diakaki, M.

Abbondanno, U.

Aerts, G.

Alvarez, H.

Alvarez-Velarde, F.

Andriamonje, S.

Andrzejewski, J.

Assimakopoulos, P.

Audouin, L.

Badurek, G.

Baumann, P.

Becvar, F.

Benlliure, J.

Berthoumieux, E.

Calvino, F.

Cano-Ott, D.

Capote, R.

Carrillo de Albornoz, A.

Chepel, V.

Chiaveri, E.

Colonna, N.

Cortes, G.

Cortina, D.

Couture, A.

Cox, J.

David, S.

Dolfini, R.

Domingo-Pardo, C.

Dorochenko, A.

Dridi, W.

Duran, I.

Eleftheriadis, Ch.

Embid-Segura, M.

Ferrant, L.

Ferrari, A.

Ferreira-Marques, R.

Fitzpatrick, L.

Frais-Koelbl, H.

Fujii, K.

Furman, W.

Goncalves, I.

Gallino, R.

Cennini, P.

Gonzalez-Romero, E.

Rauscher, T.

N TOF Collaboration

Abstract

The Np-237(n,f) cross sections have been measured at the n-TOF facility relative to the U-235 and U-238 fission cross sections. The n-TOF spallation neutron source at CERN is characterized by a high intensity flux, an excellent time resolution and an extensive neutron energy range (from eV to GeV). A fast ionization chamber was used as a fission fragment detector with efficiency better than 97%. Preliminary Np-237(n,f) cross sections have been deduced in the energy range from 20 keV to 10 MeV and are found in good agreement with data from literature.