  For nuclear level densities, a modification of an enhanced generalized
superfluid model with different collective state enhancement factors is
studied. An effect of collective states on forming the temperature is taken
into account. The ready-to-use tables for the asymptotic value of $a$-parameter
of level density as well as for addition shift to excitation energy are
prepared using the chi-square fit of the theoretical values of neutron
resonance spacing and cumulative number of low-energy levels to experimental
values. The systematics of these parameters as a function of mass number and
neutron excess are obtained. The collective state effect on gamma-ray spectra
and excitation functions of neutron-induced nuclear reactions is investigated
by the use of EMPIRE 3.1 code with modified enhanced generalized superfluid
model for nuclear level density.
