F103 Application of Phantom Particle Model to Gas-Surface Interaction and its Effectiveness

Abstract

Scattering properties of gas atoms interacting with a metal surface are calculated using a solid surface model including Phantom Particles followed by the Langevin equation. The Phantom Particle represents the statistical bulk characteristics of a metal solid, and it is applied to a gas-surface interaction for Ar-Pt(111) system. While the flux distributions, the TOP spectrum, and average energy of gas atoms scattered at the specular angle are compared with those of molecular beam experiments, the trapping probability and energy exchange rates are calculated to discuss the fundamental mechanism for gas-surface interaction.