Quasihard-sphere model in simulation of the processes of particle scattering

Abstract

A model of interatomic potentials of interaction is suggested for static simulation of the processes of elastic scattering of atomic particles by atoms of gas, plasma, and solid. In the developed model, the atomic particle radii, whose magnitude depends on the energy of their relative motion, are internal parameters. The suggested quasihard-sphere model enables one to simulate elastic processes of scattering of atomic particles, using different interatomic potentials of interaction with relatively high rates of statistical simulation characteristic of simulation within the hard-sphere model. The Born-Mayer potential is selected as the interatomic potential of interaction and modified for a wide class of partners in atomic collisions. It is demonstrated that the suggested mathematical model of quasihard spheres describes fairly correctly the processes of elastic scattering of atoms in a gas medium and of displaced atoms in a solid with an almost constant rate of static simulation.