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

Author(s)

, Maria Diakaki, Dimitrios Karadimos, Rosa Vlastou, Michael Kokkoris, Paraskevi Demetriou, Eleftherios Skordis, Andrea Tsinganis, U. Abbondanno, G. Aerts, H. Alvarez, Francisco Alvarez-Velarde, Samuel Andriamonje, Józef Andrzejewski, P. Assimakopoulos, Ludmila Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthoumieux, M. Calviani, F. Calvino, D. Cano-Ott, R. Capote, A. Carrillo de Albornoz, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, S. David, R. Dolfini, C. Domingo-Pardo, A. Dorochenko, W. Dridi, I. Duran, Ch. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, L. Fitzpatrick, H. Frais-Koelbl, K. Fuji, W. Furman, I. Goncalves, R. Gallino, E. Gonzalez-Romero, Andreas Pavlik, Heinz Oberhummer

Abstract

The neutron-induced fission cross section of Np237 was experimentally determined at the high-resolution and high-intensity facility n-TOF, at CERN, in the energy range 100 keV to 9 MeV, using the U235(n,f) and U238(n,f) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was used in order to detect the fission fragments from the reactions and the targets were characterized as far as their mass and homogeneity are concerned by means of α spectroscopy and Rutherford backscattering spectroscopy respectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employing the empire code, and the model parameters were tuned in order to successfully reproduce the experimental fission cross-sectional data and simultaneously all the competing reaction channels.

Organisation(s)

Isotope Physics

External organisation(s)

Università degli Studi di Torino, International Atomic Energy Agency (IAEA), French Alternative Energies and Atomic Energy Commission (CEA), National Technical University of Athens (NTUA), European Organization for Nuclear Research (CERN), Istituto Nazionale di Fisica Nucleare (INFN), Roma, Universidade de Santiago de Compostela (USC), Centro de Investigaciones Energeticas Medioambientales y Tecnológica, University of Lodz, University of Ioannina, Centre National De La Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), Strasbourg , Charles University Prague, Universitat Politècnica de Catalunya, Universidade de Lisboa, Universidade de Coimbra, University of Notre Dame, Università degli studi di Pavia, Instituto de Física Corpuscular (IFIC), Institute of Physics and Power Engineering (IPPE), Aristotle University of Thessaloniki, Fachhochschule Wiener Neustadt, Joint Institute for Nuclear Research, Universität Wien

Journal

Physical Review C

Volume

93

No. of pages

12

ISSN

0556-2813

DOI

https://doi.org/10.1103/PhysRevC.93.034614

Publication date

03-2016

Peer reviewed

Yes

Austrian Fields of Science 2012

103014 Nuclear physics

Keywords

ASJC Scopus subject areas

Nuclear and High Energy Physics

Portal url

https://ucris.univie.ac.at/portal/en/publications/neutroninduced-fission-cross-section-of-np237-in-the-kev-to-mev-range-at-the-cern-ntof-facility(ac40d2e3-3478-474e-a4fe-22da3344aca9).html