Description of fission yields in the nucleon-induced fission reactions

The potential model for the fission fragment mass distributions and simplified approach for the isobaric charge distribution are proposed for the description of fission yields (FY). The intermediate energy reaction code MCFx was used for the calculation of the fissionning nuclei distribution after fast (cascade), preequilibrium and statistical reaction stages. Formation of the mass distributions is considered as a result of oscillations on mass asymmetry degree of freedom in the potential well calculated with the temperature dependent shell correction method. The comparison of calculation results with the experimental data on FY for both low and intermediate energy fission show a good agreement of the data and let us conclude that the approach proposed may be useful for FY evaluations for experimentally unknown fission yields data in the case of the intermediate energy nucleon-induced fission.