Authors & Affiliations

Kornilov N. V., Kagalenko A.B.
State Scientific Centre - A.I. Leipunsky Institute for Physics and Power Engineering, Obninsk, Russia


The mass, energy and angular integrated spectra of prompt fission neutrons for 235U induced fission in the energy range from thermal to 5 MeV were analyzed. It allows assume that about 0.362±0.025 neutrons per fission are emitted due to another mechanism then neutron emission from excited fragments after full acceleration. The spectrum of scission neutrons consists of two components with average energy 0.98 MeV and 2.74 MeV. The share of scission neutrons and their spectrum shape estimated in this work does not contradict to results of differential experiments analyzed in previous papers.

spectra of prompt fission neutrons, U-235, neutron emission model, spectrum of scission neutrons, energy distribution

Article Text (PDF, Translated by IAEA)


UDC 539.173.84

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 2, 2001