Simultaneous measurement of the neutron capture and fission yields of (233)U

Berthoumieux, E., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., 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., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fujii, K., Furman, W., Goncalves, I., Gonzalez-Romero, E., Gramegna, F., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Jericha, E., Kaeppeler, F. and Rauscher, T. (2008) Simultaneous measurement of the neutron capture and fission yields of (233)U. In: International Conference on Nuclear Data for Science and Technology, 2007-04-22 - 2007-04-27.

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We have measured the neutron capture and fission cross section of 233 U at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV with high accuracy by using a high performance 4 pi BaF(2) Total Absorption Calorimeter (TAC) as a detection device. The method, based on the TAC energy response study, allowing to disentangle between gamma's originating from fission and capture will be presented as well as the first very preliminary results.