Ion neutralization at ionic crystal surfaces

Abstract

Results of experimental and theoretical investigations of low-energy ion–surface charge exchange on the surface of LiF single crystals are described. It is shown that, for adequate interpretation of experimental data on ion neutralization, it is important to use the exact overlap integrals of electron orbitals of interacting particles instead of the commonly used exp(− r/ r 0) hopping integrals. The many-particle time-dependent Anderson–Newns Hamiltonian is used to describe ion–surface interaction.