Neutron-induced fission cross section of $^{237}$Np in the keV to MeV range at the CERN n_TOF facility

• Published in: Physical review. C 2016, Vol.93 (3)
• Main Authors: Diakaki, M., Karadimos, D., Vlastou, R., Kokkoris, M., Demetriou, P., Skordis, E., Tsinganis, A., Abbondanno, U., Aerts, G., Álvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, Paule, Bečvář, F., Berthoumieux, E., Calviani, M., Calviño, F., Cano-Ott, D., Capote, R., Carrillo de Albornoz, A., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., 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, Anthony, Marques, Ricardo, Fitzpatrick, L., Frais-Koelbl, H., Fuji, K., Furman, W., Goncalves, I., Gallino, R., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Ioannidis, K., Isaev, S., Jericha, E., Kadi, Y., Käppeler, F., Karamanis, D., Kerveno, M., Ketlerov, V., Koehler, P., Kolokolov, D., Konovalov, V., Krtička, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O'Brien, S., Oshima, M., Pancin, J., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Plag, R., Plompen, A., Plukis, A.
• Format: Article
• Language: English
• Subjects: Nuclear Experiment; Physics
• ISSN: 2469-9985; 2469-9993
• DOI: 10.1103/PhysRevC.93.034614

The neutron-induced fission cross section of 237Np was experimentally determined at the high-resolutionand high-intensity facility n TOF, at CERN, in the energy range 100 keV to 9 MeV, using the 235U(n,f ) and 238U(n,f ) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was usedin order to detect the fission fragments from the reactions and the targets were characterized as far as theirmass and homogeneity are concerned by means of α spectroscopy and Rutherford backscattering spectroscopyrespectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employingthe EMPIRE code, and the model parameters were tuned in order to successfully reproduce the experimental fissioncross-sectional data and simultaneously all the competing reaction channels.