The redistribution of the elements as a result of atomic relocations produced by the ions and the recoils due to the ballistic and transport processes was investigated by using a dynamic Monte Carlo code. Phenomena, such as radiation-enhanced diffusion and bombardment-induced segregation triggered by the ion bombardment may also contribute to the migration of atoms within the target. In order to include both radiation-enhanced diffusion and bombardment-induced segregation in the code, an approach was suggested which was considered to be an extension of the binary collision approximation, i.e. it took place “simultaneously” with the cascade and acted as a correction to the particle redistribution for low energies. Both radiation-enhanced diffusion and bombardment-induced segregation models were based on the common approach to treat the transport processes as a result of a random migration of point defects (vacancies and interstitials) according to a probability given by a pre-defined Gaussian.

Non-Thermodynamic Approach to Including Bombardment-Induced Post-Cascade Redistribution of Point Defects in Dynamic Monte Carlo Code. V.A.Ignatova, I.R.Chakarov, I.V.Katardjiev: Nuclear Instruments and Methods in Physics Research B, 2003, 202, 24-30