A BIPARTITION MODEL WITH SINGLE-SCATTERING APPROXIMATION FOR THE CALCULATIONS OF REFLECTION OF ENERGETIC IONS FROM SURFACES

A bipartition model for ion transport in solids has been presented. Un like the earlier bipartition model, a single-scattering approximation has been adopted and angular correlation of energy transfer has been p artly taken into account. By the present bipartition model, the reflec tion coefficients and energy spectrum of reflected ions have been calc ulated. The results show that the present bipartition model gives bett er descriptions of reflection although it is simpler in calculation th an the earlier bipartition model.