  We have measured the total kinetic energy (TKE) release for the
$^{235}$U(n,f) reaction for $E_{n}$=2-100 MeV using the 2E method with an array
of Si PIN diode detectors. The neutron energies were determined by time of
flight measurements using the white spectrum neutron beam at the LANSCE
facility. (To calibrate the apparatus, the TKE release for
$^{235}$U(n$_{th}$,f) was also measured using a thermal neutron beam from the
OSU TRIGA reactor). The TKE decreases non-linearly from 169.0 MeV to 161.4 MeV
for $E_{n}$=2-90 MeV. The standard deviation of the TKE distribution is
constant from $E_{n}$=20-90 MeV. Comparison of the data with the multi-modal
fission model of Brosa indicates the TKE decrease is a consequence of the
growth of symmetric fission and the corresponding decrease of asymmetric
fission with increasing neutron energy. The average TKE associated with the
Brosa superlong, standard I and standard II modes for a given mass is
independent of neutron energy.
