Energy loss in large-angle scattering of slow, highly charged Ar ions from a Au surface
Abstract
Energy loss of slow (v~0.06 a.u.), highly charged Ar9+ ions scattered from a Au(111) single-crystal surface has been investigated for different incident angles (ψ=5° and 37.5°) and a fixed scattering angle of 75°. The energy position of the elastic peak agrees well with the value expected for the binary elastic scattering. At small incidence angle (5°) an additional inelastic energy loss was identified in spite of the large scattering angle. This additional energy loss is found to compare well with a combination of a modified Firsov model with processes of electron capture, recapture, Auger transitions, and image charge acceleration during the ion-surface interactions.
- Publication:
-
Physical Review A
- Pub Date:
- October 1998
- DOI:
- 10.1103/PhysRevA.58.2962
- Bibcode:
- 1998PhRvA..58.2962H
- Keywords:
-
- 34.50.Dy;
- 79.20.Rf;
- Interactions of atoms and molecules with surfaces;
- photon and electron emission;
- neutralization of ions;
- Atomic molecular and ion beam impact and interactions with surfaces