Calculation Of Fission Fragment Yields At Low And Intermediate Energy Fission

The model for fission fragment mass distributions and results of calculations for low energy fission and fission induced by intermediate energy nucleons is presented. Formation of mass distributions is considered as a result of oscillations on mass asymmetry degree of freedom in the potential well calculated in the macroscopic-microscopic approach. For intermediate energy fission the distribution of fissioning nuclei is taken into account with detailed reaction calculations including direct, preequilibrium and statistical reaction stages.