Abstract
The post-emission total kinetic energy release (TKE) in the neutron-induced fission of 232Th was measured (using white spectrum neutrons from LANSCE) for neutron energies from $ E_{n} = 3$ to 91MeV. In this energy range the average post-neutron total kinetic energy release decreases from $ 162.3 \pm 0.3$ at $ E_n = 3$ MeV to $ 154.9 \pm 0.3$ MeV at $ E_n = 91$ MeV. Analysis of the fission mass distributions indicates that the decrease in TKE with increasing neutron energy is a combination of increasing yields of symmetric fission (which has a lower associated TKE) and a decrease in the TKE release in asymmetric fission.
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