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Electron dynamics and level broadening in slow atomic interactions with metal surfaces and thin metallic films

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
0168-583X
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0168-583x(99)01158-1

Abstract

Abstract Theoretical results on the electron dynamics and on resonant level broadening in slow atomic interactions with metal surfaces and thin metallic films are presented. Within the time-dependent close-coupling method, a wave-packet approach is introduced in which nondiagonal couplings in the subspace of metal states are taken into account. This approach is applied in a study of the time evolution of the occupation of hydrogen states in front of a semi-infinite metal. First-order level widths are calculated for hydrogenic atoms interacting with thin metallic films. They are found to exhibit pronounced size-quantization effects arising from the confinement of the electronic motion in the growth direction of the film.

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