Electron transfer and energy loss processes in fluorine scattering on oxygen covered Ag(110) – Crystal azimuthal dependence

Autor: J. Díaz-Valdés, Patricio Vargas, J. E. Valdés, A.R. Canario, Vladimir A. Esaulov, L. Guillemot
Rok vydání: 2013
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 315:36-41
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2013.04.091
Popis: Measurements of energy-losses and electron transfer processes in 1–4 keV fluorine ions and atoms scattering on clean and oxygen covered Ag(1 1 0) were studied. We report data for surface channeling conditions for different surface azimuths for the clean and oxygen covered O(2 × 1)–Ag(1 1 0) (2 × 1) reconstructed surface. Adsorption of oxygen results in strong changes in energy losses and a decrease in the negative ion fraction. Energy loss results are discussed in the light of calculations using non-linear models for stopping power, ab initio crystal structure calculations of the electronic density and semi-classical deterministic simulations.
Databáze: OpenAIRE