Multi-coincidence studies as a technique for the investigation of ion-surface interaction

Using a recently developed multi detector, a large variety of multi-coincid ence studies for ion-surface interaction becomes possible. In particular th is includes simultaneous measurements of projectile energy losses and angul ar scattering patterns in combination with statistics, angular and energy d istributions of secondary electrons emitted. Results are presented for graz ing scattering of protons and Oq+ (q = 2,3,5,6; E = 10 keV) ions from LiF s ingle crystal which demonstrate the potential of the technique for investig ating ion-surface interaction and deliver interesting new information on pr ojectile energy losses and secondary electron emission in correlation with scattering angle. As a future development a possible combination of this te chnique with the voltage labeling method for studying backscattered project iles will be discussed.