Study of the pre-equilibrium mean free path constant for light and heavy nuclei for (n, xn) reactions

► Mean free path constant have been investigated for some target nuclei. The target nuclei have been changed from light to heavy. ► Neutron-emission spectra produced by (n, xn) have been calculated. ► Incident neutron energies have been changed from 15 to 26 MeV. ► The pre-equilibrium effects have been investigated. ► The mean free path constant has been found that very effective for pre-equilibrium reactions.