Energy loss of heavy ions specularly reflected from surfaces under glancing-angle incidence - art. no. 052902

A theoretical model is developed to study the energy loss of heavy ions spe cularly reflected on a solid surface at a glancing angle using the dielectr ic response theory and the specular reflection model. A local-field correct ion and a plasmon-pole approximation for dielectric function are employed i n the low- and high- velocity regimes, respectively. Also, the Brandt-Kitag awa model is used to express the distribution of the electrons bound to the projectiles. We obtain analytical expressions fur the position-dependent s topping power and the surface image potential. The energy losses, dependent on the charge state of the ions and the incident angles, are calculated an d compared with the corresponding experimental results.