Title: Electronic processes during the sputtering of atoms from metallic surfaces studied by resonance laser ionization spectroscopy
Authors: Bastiaansen, Jeroen ×
Vervaecke, Frederik
Vandeweert, Erno
Lievens, Peter
Silverans, Roger #
Issue Date: Jun-2003
Publisher: Pergamon-elsevier science ltd
Series Title: Spectrochimica Acta Part B-Atomic Spectroscopy vol:58 issue:6 pages:1147-1154
Abstract: We demonstrate how resonance laser ionization spectroscopy can be applied to investigate the electronic processes that lead to the sputtering of neutral atoms in different quantum states upon keV-ion bombardment of metallic surfaces. Key information about the electronic processes is contained in the population probability of a specific atomic state and the state-specific escape velocities of the emitted particles. State-selective laser probing allows one to measure the population partition and velocity distributions of sputtered atoms, which is exemplified for Ni. It is demonstrated that the trends in these experimental observables can be qualitatively interpreted within the framework of the resonant electron transfer model. Furthermore, we show that our data are in good quantitative agreement with the outcome of a rate-equation approach based on this model. (C) 2003 Elsevier Science B.V. All rights reserved.
ISSN: 0584-8547
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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