Details

Autor(en) / Beteiligte

• Rubchenya, V. A.

Titel

A consistent model for describing prompt fission neutrons

Ist Teil von

• Bulletin of the Russian Academy of Sciences. Physics, 2015-07, Vol.79 (7), p.883-889

Ort / Verlag

New York: Allerton Press

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A theoretical model for a consistent description of prompt neutron emission for spontaneous and neutronand proton-induced fission over a wide range of energies is presented. Prompt fission neutron parameters are formed at the four main fission process stages: pre-equilibrium particle emission, neutron evaporation upon crossing the fission barrier, neutron evaporation upon descending from the saddle point to the scission point, and neutron emission from pairs of accelerated fragments. The Monte Carlo method is used to simulate the evolution of a nucleus undergoing fission down to the scission point. The parameters of an ensemble of sources after fragmentation are calculated using the scission point model and the multimodal fission model. Calculated neutron spectra and multiplicities are given for spontaneous 244–257 Fm and 252 Cf fission and 235 U fission induced by thermal and 14.7 MeV neutrons.