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Direct observation and theory of trajectory-dependent electronic energy losses in medium-energy ion scattering
A Hentz1, G S Parkinson, P D Quinn
1Physics Department, University of Warwick, Coventry CV4 7AL, United Kingdom.
Abstract:
The energy spectrum associated with scattering of 100 keV H+ ions from the outermost few atomic layers of Cu(111) in different scattering geometries provides direct evidence of trajectory-dependent electronic energy loss. Theoretical simulations, combining standard Monte Carlo calculations of the elastic scattering trajectories with coupled-channel calculations to describe inner-shell ionization and excitation as a function of impact parameter, reproduce the effects well and provide a means for far more complete analysis of medium-energy ion scattering data.
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