Statistical model for calculation of light particles emission from excited nuclei

A detailed representation of algorithms and formulae of the new evaporation model, realized in the EVAP15 code, is given. The composite formula by Gilbert and Cameron with parameters recommended by the IAEA working group RIPL-3 is used in the program for the description of level density of excited nuclei. A special attention is paid to inverse reaction cross sections, in particular, to the reaction cross sections of low energy neutrons with nuclei and to crossing Coulomb barrier by low energy charged particles. Results of calculations are compared with a large number of experimental spectra of particles emitted in the reactions (n, xn), (n, xp) and (n, xα) at neutron energy nearby 14 MeV as well as with four (p, xp)-spectra at the proton energy 62 MeV.