Calculations of Trapping and Desorption in Heavy Atom Collisions with Surfaces

摘要

Calculations are carried out for the scattering of heavy rare gas atoms withsurfaces using a recently developed classical theory that can track particlestrapped in the physisorption potential well and follow them until ultimatedesorption. Comparisons are made with recent experimental data for xenonscattering from molten gallium and indium, systems for which the rare gas isheavier than the surface atoms. The good agreement with the data obtained forboth time-of-flight energy-resolved spectra and for total scattered angulardistributions yields an estimate of the physisorption well depths for the twosystems.