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We perform energy dependent calculations of independent and cumulativefission product yields for $^{235}$U, $^{238}$U, and $^{239}$Pu in the firstchance fission region. Starting with the primary fission fragment distributionstaken from available experimental data and analytical functions based onassumptions for the excitation energy and spin-parity distributions, theHauser-Feshbach statistical decay treatment for fission fragment de-excitationis applied to more than 1,000 fission fragments for the incident neutronenergies up to 5 MeV. The calculated independent fission product yields arethen used as an input of $\beta$-decay to produce the cumulative yield, andsummation calculations are performed. Model parameters in these procedures areadjusted by applying the Bayesian technique at the thermal energy for $^{235}$Uand $^{239}$Pu and in the fast energy range for $^{238}$U. The calculatedfission observable quantities, such as the energy-dependent fission yields, andprompt and delayed neutron yields, are compared with available experimentaldata. We also study a possible impact of the second chance fission opening onthe energy dependence of the delayed neutron yield by extrapolating thecalculation.

Energy Dependent Calculations of Fission Product, Prompt, and Delayed  Neutron Yields for Neutron Induced Fission on $^{235}$U, $^{238}$U, and  $^{239}$Pu