Article ID Journal Published Year Pages File Type
1684171 Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2009 4 Pages PDF
Abstract

Different single and polycrystalline surfaces of Cu and Ag have been investigated by time-of-flight low-energy ion scattering using 4He+ ions. The fraction of ions that survived single scattering from the outermost surface layers, P+, was measured in different neutralization regimes. At low energies, a distinct difference in P+ was observed for non-equivalent Cu crystal surfaces for projectiles backscattered in a single collision. The polycrystalline surface was found to exhibit similar neutralization behaviour as the (1 1 1) single crystal surface. At higher energies, P+ shows a strong dependence on the angular orientation of the single crystal. The impact of these findings on quantitative surface composition analysis by LEIS is discussed.

Related Topics
Physical Sciences and Engineering Materials Science Surfaces, Coatings and Films
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