Neutron-induced fission cross section of U 234 measured at the CERN n-TOF facility
Author
Karadimos, D.
Vlastou, R.
Ioannidis, K.
Demetriou, P.
Diakaki, M.
Vlachoudis, V.
Pavlopoulos, P.
Konovalov, V.Y.
Abbondanno, U.
Aerts, G.
Álvarez, H.
Álvarez-Velarde, F.
Andriamonje, S.A.
Andrzejewski, J.
Assimakopoulos, P.A.
Audouin, L.
Badurek, G.
Baumann, P.
Bečvář, F.
Berthoumieux, E.
Calviño, F.
Cano-Ott, D.
Capote, R.
Carrillo De Albornoz, A.
Chepel, V.Y.
Chiaveri, E.
Colonna, N.
Cortés, G.
Couture, A.J.
Cox, J.M.
David, S.
Dolfini, R.
Domingo-Pardo, C.
Dorochenko, A.
Dridi, W.
Durán, I.
Eleftheriadis, C.A.
Embid-Segura, M.
Ferrant, L.
Ferrari, A.N.
Ferreira-Marques, R.
Fitzpatrick, L.
Frais-Köelbl, H.
Fuji, K.
Furman, W.I.
Gonçalves, I. F.
Gallino, R.
Cennini, P.
González-Romero, E.M.
Goverdovski, A. A.
Gramegna, F.
Griesmayer, E.
Guerrero, C.
Gunsing, F.
Haas, B.
Haight, R.C.
Heil, M.
Herrera-Martínez, A.
Igashira, M.
Isaev, S. G.
Jericha, E.
Kadi, Y.
Käppeler, F.
Karamanis, D.
Kerveno, M.
Ketlerov, V. V.
Koehler, P. E.
Kolokolov, D.I.
Krtička, M.
Lamboudis, C.
Leeb, H.
Lindote, A.
Lopes, I.
Lozano, M.
Lukić, S.
Marganiec, J.
Marques, L.
Marrone, S.
Massimi, C.
Mastinu, P.F.
Mengoni, A.
Milazzo, P.M.
Moreau, C.
Mosconi, M.
Neves, F.
Oberhummer, H.
O'Brien, S.
Oshima, M.
Pancin, J.
Papadopoulos, C.
Paradela, C.
Patronis, N.E.
Pavlik, A.
Perrot, L.
Plag, R.
Plompen, A.J.M.
Plukis, A.
Poch, A.
Pretel, C.
Quesada, J.M.
Rauscher, T.
Reifarth, R.
Rosetti, M.
Rubbia, C.
Rudolf, G.
Rullhusen, P.
Salgado, J.
Sarchiapone, L.
Savvidis, I.
Sedysheva, M.V.
Stamoulis, K. C.
Stephan, C.C.
Tagliente, G.
Taín, J. L.
Tassan-Got, L.
Távora, L.M.N.
Terlizzi, R.
Tsinganis, A.
Vannini, G.
Vaz, P.D.
Ventura, A.
Villamarín, D.
Vincente, M. C.
Voss, F.
Wendler, H.
Wiescher, M.C.
Wisshak, K.
Attention
2299/13570
Abstract
The neutron-induced fission cross section of U234 has been measured at the CERN n-TOF facility relative to the standard fission cross section of U235 from 20 keV to 1.4 MeV and of U238 from 1.4 to 200 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with a detection efficiency of no less than 97%. The high instantaneous flux and the low background characterizing the n-TOF facility resulted in wide-energy-range data (0.02 to 200 MeV), with high energy resolution, high statistics, and systematic uncertainties bellow 3%. Previous investigations around the energy of the fission threshold revealed structures attributed to β-vibrational levels, which have been confirmed by the present measurements. Theoretical calculations have been performed, employing the talys code with model parameters tuned to fairly reproduce the experimental data.