Surface light-induced drift due to anisotropic gas-surface scattering in models with and without boundary conditions

Surface light-induced drift (SLID), which occurs under velocity-selective e xcitation due to the state-dependence of the probability of trapping or che misorption, has demonstrated its extreme sensitivity in studying the state- specificity of gas-surface interactions. Contrary to an intuitive perceptio n, SLID can be also used to obtain the information on the angular dependenc e of the gas-surface scattering. In this paper we describe this effect qual itatively and then analyze it in two different models, with and without bou ndary conditions. We also discuss the implications of the results for study ing the scaling laws of the angular dependence of surface scattering by the SLID technique.