Kilohyphen;electronhyphen;volt Arndash;ionhyphen;induced neutral atom desorption from Rhlcub;331rcub;: Relation of angular distributions to surface structure

摘要

The surface structure of single crystal metals in reflected in the angular distributions of neutral atoms desorbed during keV Ar ion bombardment. Results are presented here of a study of desorption from a stepped surface, Rhlcub;331rcub;. Recently, classical dynamics simulations of the desorption process were shown to give excellent agreement with ejection data from Rhlcub;111rcub;, and the same model potential has been used to simulate desorption from Rhlcub;331rcub;. The agreement with experiment remains excellent despite the different coordination of the surface atoms on Rhlcub;111rcub; and Rhlcub;331rcub;. The azimuthal ejection distributions are strongly affected by the steps.