Fission Product Yield Calculation by Hauser-Feshbach Statistical Decay and Beta Decay

We demonstrate calculations of the prompt neutron emission, the independent and cumulative fission product yield (FPY), decay heat, and delayed neutron yield of 235 U(n,f) starting from a set of the primary fission fragment distribution. We employ the recently developed Hauser-Feshbach fragment decay code, HF 3 D, to calculate the prompt neutron multiplicity and the independent FPY. The β-decay chain of each nuclide in the independent FPY is tracked to obtain the cumulative FPY. The decay heat and delayed neutron yield are calculated by the summation calculation method. Comparisons of the fission and β-decay observables calculated in this work, experimental data, and the evaluated nuclear data libraries provide an important insight for improvements of evaluation of the nuclear data.