Computer-based modeling of radiation defect parameters in materials irradiated with charged particles

The paper considers a new approach to approximation expressions for integral sections of interaction and coefficients included in cascade-probability functions (CPF), spectra primary knocked-on atoms (PNA) the concentration radiation defects materials irradiated with charged particles, namely electrons, protons, alpha particles ions. obtained approximations made it possible design mathematical models taking into account energy losses interaction, penetration depths were calculated, chosen, above found. Recurrence ratios derived obtain CPF. choice an expression finding was compared earlier process using different software packages. It is apparent that use modern algorithms considerably simplifies this process.