Electron Dynamics In H~-a/cu(111) Collisions

摘要

Surface adsorbates induce strong local perturbations in the electronic structure and potentials in their surroundings. Consequently, charge transfer processes between projectiles and adsorbate-covered surfaces are strongly affected. The theoretical calculations and experiment measurements reported herein are focused on the H~-/Na/Cu(111) system. The electron dynamics at the Na/Cu(111) surface and the influence of Na adsorbates on the H~--Cu(111) charge transfer are treated and discussed in detail. The ion fractions are mainly influenced by the ion exit trajectories. At low Na coverage, they exhibit a maximum near the 60° exit angle from surface. The calculations and experimental data are in good agreement.