The inelastic collision model: III. Matrix inversion for isotropic scatterers

摘要: Abstract Numerical calculations are performed using a s-wave scatterer, uniform-damping version of the inelastic-collision model. A comparison between “exact” (i.e., matrix-inversion) results and predictions double-diffraction approximation is presented. This not quantitatively valid (for physically sensible damping parameters) if phase shifts exceed 1 5 π . diagnostic technique given for identifying Bragg, multiple scattering resonance, inter-layer peaks (ILMSP's). For an shift 2 , behavior intensity profiles shown to be dominated by scattering. The intensities (but positions) ILMSP's sensitive details from top layer crystal energies above that second primary Bragg peak relatively insensitive this below peak. predicted also depend strongly on geometrical structure lattice. sensitivity both types parameters enhanced isotropic strongscattering models. Pronounced angle inclination incident beam predicted. calculated (phase electron decay length 8 A) display qualitatively all features experimental profiles. From knowledge gained analysis it possible derive substrate clean metal surfaces.