Comparison of prompt-fission neutron multiplicities and energy spectra for intermediate energy proton-and neutron-induced fissionOleg Batenkov1, Georgy Boikov1, Vilen Eismont1, Mikhail Majorov1, Sergey Soloviev1, Jan Blomgren2 and Walter Loveland3
1 V.G. Khlopin Radium Institute, 2oi Murinskiy Prospect 28, Saint-Petersburg 194021, Russia
2 Department of Neutron Research, Uppsala University, Box 525, 751 20 Uppsala, Sweden
3 Oregon State University, USA
Published online: 21 May 2008
The number and spectra of neutrons, in particular the number and spectra of prompt neutrons from the fission of actinides, at the intermediate energies represent important physical quantities, which determine the possibility of applying of one or another design of ADS. The multiplicities and energy distributions of prompt neutrons in interactions of 232Th, 235, 238U and 237Np with 50 and 96 MeV protons were measured by our group. The data are compared with results of recent measurements of the average multiplicities and spectra of prompt neutrons at the fission of 235, 238U induced by neutrons of the same energies. The correlation of the measured characteristics with neutron-proton compositions of composite nuclei is discussed. The similarity of characteristics for fission induced by neutrons and protons is noted.
© CEA 2008