Open Access
ND 2007
Article Number 157
Number of page(s) 4
Section Neutron cross section measurements
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07463

Neutron capture cross section measurements on 237Np with a 4π Ge spectrometer

M. Mizumoto1, M. Igashira1, T. Ohsaki1, T. Katabuchi1, M. Oshima2, M. Koizumi2, Y. Toh2, A. Kimura2, H. Harada2, K. Furutaka2, S. Nakamura2, F. Kitatani2, J. Hori3 and J. Goto4

1  Research Laboratory for Nuclear Reactor, Tokyo Institute of Technology, O-okayama, Meguro, Tokyo 152-8550, Japan
2  Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
3  Research Reactor Institute, Kyoto University, Kumatori, Sennan, Osaka 590-0494, Japan
4  Radioisotope Center, Niigata University, Asahimachi-Dori, Niigata 951-8510, Japan

Published online: 21 May 2008

Neutron capture cross sections on minor actinides are important in the design work for innovative nuclear reactor systems. In order to improve data accuracy, a 4π Ge spectrometer system surrounded with large BGO detectors for Compton suppression has been developed. Capture cross sections of 237Np were obtained and resonance analyses using the code SAMMY were performed for several low energy resonances. Measurements were carried out at the electron Linac of KURRI (Kyoto University Research Reactor Institute) with an electron energy of 30 MeV.

© CEA 2008

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