Influence of fission modes on prompt neutron characteristics in the neutron-induced fission of 235U

P. Talou

doi:doi:10.1051/ndata:07505

All issues

Year: 2007

10.1051/ndata:07505

Abstract

Open Access

Issue		ND 2007 2007


Article Number		086
Number of page(s)		4
Section		Fission studies
DOI		https://doi.org/10.1051/ndata:07505
Published online		17 June 2008

International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07505

Influence of fission modes on prompt neutron characteristics in the neutron-induced fission of ²³⁵U

P. Talou

CEA/DEN/DER/SPRC/Laboratoire d'Études de Physique, Cadarache, France

Published online: 21 May 2008

Abstract
The de-excitation of the fission fragments formed in the neutron-induced fission of ²³⁵U, for incident energies from 0.5 to 6.0 MeV, is simulated numerically. Neutrons are emitted sequentially from a Weisskopf spectrum with a temperature set by previous neutron emissions. The complete decay chain is followed until a fission product is formed and no further neutron emission is allowed energetically. Detailed results are obtained, such as the average prompt neutron multiplicity as a function of the fragment mass and the total kinetic energy $\bar{\nu}$ (A,TKE) and the multiplicity distribution P(ν). An interpretation in terms of fission modes is proposed.