Electron energy loss spectroscopy. Calculation of the impact scattering from W(100)p(1 × 1)H

Abstract

Calculations are reported of the loss intensities for the inelastic scattering of low-energy electrons with one-quantum energy loss to the adsorbate vibrations. The relevant T-matrix element is computed using LEED wavefunctions for the familiar muffin-tin potential model, so only the impact scattering is calculated. This is the dominant scattering away from specular, and scattering angle-resolved loss intensities for both perpendicular, and parallel adsorbate vibrations are presented. These angular dependences show a wealth of structure, but although the experimental data is scanty, not all of it can be reproduced.