  Neutron scattering total cross sections have been estimated from nuclei
ranging in mass 6 to 238 and for neutron energies 10 MeV to 600 MeV using a
simple function of three parameters. These total cross sections have also been
calculated using coordinate space optical potentials formed by full folding
effective two-nucleon (NN) interactions with one body density matrix elements
(OBDME) of the nuclear ground states. Adjusting the theoretically defined
parameter values has enabled us to fit the actual measured data. The simple
functional parameter values vary smoothly with mass and energy.
