Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions

Prompt and $\beta$-delayed fission observables, such as the average number of prompt delayed neutrons, independent cumulative product yields, $\gamma$-ray energy spectra for photonuclear reactions on $^{235,238}$U $^{239}$Pu are calculated with Hauser-Feshbach Fission Fragment Decay (HF$^3$D) model compared available experimental data. In analysis neutron-induced to case photo-induced fission, an excellent reproduction neutron yields supports a traditional assumption that photo-fission might be similar at same excitation energies regardless spin parity fissioning systems.