Measurement of the Average Multiplicity of Prompt-Fission Neutrons from 238U(n,f) and 235U(n,f) from 0.7 to 200 MeV

摘要

Prompt-fission-neutron multiplicities were measured at a "white" neutron source for the fission of 238U and 235U up to 200 MeV. The data are of great importance in the connection of accelerator-coupled nuclear-reactor systems incinerating actinides, with uranium considered as a prototype actinide. We report that the fission induced by 200-MeV neutrons produces 10 more prompt neutrons than the fission induced by reactor neutrons.