Multi-Coincidence Studies as a Technique for the Investigation of Ion-Surface Interaction

Abstract

Using a recently developed multi detector, a large variety of multi-coincidence studies for ion-surface interaction becomes possible. In particular this includes simultaneous measurements of projectile energy losses and angular scattering patterns in combination with statistics, angular and energy distributions of secondary electrons emitted. Results are presented for grazing scattering of protons and Oq+ (q = 2,3,5,6; E = 10 keV) ions from LiF single crystal which demonstrate the potential of the technique for investigating ion-surface interaction and deliver interesting new information on projectile energy losses and secondary electron emission in correlation with scattering angle. As a future development a possible combination of this technique with the voltage labeling method for studying backscattered projectiles will be discussed.