Studies of Neutron-Induced Fission of $^{235}$U, $^{238}$U, and $^{239}$Pu

A Frisch-gridded ionization chamber and the double energy (2E) analysis method were used to study mass yield distributions and average total kinetic energy ($\overline{TKE}$) release from neutron-induced fission of $^{235}$U, $^{238}$U, and $^{239}$Pu. Despite decades of fission research, little or no $\overline{TKE}$ data exist for high incident neutron energies. Additional average $\overline{TKE}$ information at incident neutron energies relevant to defense- and energy-related applications will provide a valuable observable for benchmarking simulations. The data can also be used as inputs in theoretical fission models. The Los Alamos Neutron Science Center - Weapons Neutron Research (LANSCE - WNR) provides a neutron beam from thermal to hundreds of MeV, well-suited for filling in the gaps in existing data and exploring fission behavior in the fast neutron region. The results of the studies on $^{238}$U, $^{235}$U, and $^{239}$Pu will be presented. LA-UR-14-24921