  Fortran subroutines have been written to simulate the production of fission
neutrons from the spontaneous fission of 252Cf and 240Pu, and from the thermal
neutron induced fission of 239Pu and 235U. The names of these four subroutines
are getnv252, getnv240, getnv239, and getnv235, respectively. These subroutines
reproduce measured first, second, and third moments of the neutron multiplicity
distributions, measured neutron-fission correlation data for the spontaneous
fission of 252Cf, and measured neutron-neutron correlation data for both the
spontaneous fission of 252Cf and the thermal neutron induced fission of 235U.
The codes presented here can be used to study the possible uses of
neutron-neutron correlations in the area of transparency measurements and the
uses of neutron-neutron correlations in coincidence neutron imaging.
