The fission yield calculations with Langevin model, Hauser-Feshbach statistical decay, and beta decay

We performed the calculations of de-excitation of the primary fission fragments by the Hauser-Feshbach statistical decay followed by the β decay of de-excited fission products. We used the primary fission fragment mass distributions Y P ( A ), total kinetic energy TKE( A ), and its width σ TKE ( A ) as input, which were calculated with the Langevin model using macroscopic-microscopic models of the potential energy surface. The prompt neutron multiplicity v ̅ and the independent fission product yield (FPY) Y I (Z, A, M) and cumulative FPY Y C (Z, A, M) are calculated by the Hauser-Feshbach statistical decay and β decay calculations, respectively. The calculated v ̅ was overestimated approximately 17% compared to the evaluated data. The decay heats from β and γ were in accordance with the experimental results. The β delayed neutrons yieild was also overestimated.