  Pre-saddle neutron multiplicity has been calculated for several fission
reactions induced by heavy ions and light particles. Experimentally, it is
impossible to determine the contribution of neutrons being emitted before the
saddle point and those emitted between the saddle and the scission points.
Determination of the pre-saddle neutron multiplicity in our research is based
on the comparison between the experimental anisotropies and those predicted by
the standard saddle-point statistical model. Analysis of the results shows that
the pre-saddle neutron multiplicity depends on the fission barrier height and
stability of the compound nucleus. In heavy ion induced fission, the number of
pre-saddle neutrons decreases with increasing the excitation energy of the
compound nucleus. A main cause of this behavior is due to a reduction in the
ground state-to-saddle point transition time with increasing the excitation
energy of the compound nucleus. Whereas in induced fission by light particles,
the number of pre-saddle neutrons increases with increasing the excitation
energy of the compound nucleus.
