Extension of the Hauser-Feshbach fission fragment decay model to multichance fission

The Hauser-Feshbach fission fragment decay model, $\mathtt{HF^3D}$, which calculates the statistical of fragments, has been expanded to include multi-chance fission, up neutron incident energies 20 MeV. deterministic takes as input pre-scission quantities - probabilities and average energy causing post-scission yields in mass, charge, total kinetic energy, spin, parity. From these initial conditions, full is followed through both prompt delayed particle emissions, allowing for calculation $\gamma$ properties, such multiplicity distributions, independent cumulative yields, observables. In this work, we describe implementation into $\mathtt{HF^3D}$ show an example beyond first-chance using neutron-induced on $^{235}$U. This expansion represents significant progress consistently modeling emission particles from fissile systems.