Ion-induced electron emission from surfaces: Dynamical screening effects

Journal Article · Fri Aug 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.022902· OSTI ID:20640071

Kouzakov, Konstantin A; Berakdar, Jamal ^[1]

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1. Max-Planck-Institute of Microstructure Physics, Weinberg 2, 06120 Halle, (Germany)

A theoretical model is developed for the description of the single-electron emission from surfaces following the impact of fast ions. The theory describes quantum mechanically the ion reflection at the surface and the excitation of the valence band electrons via an ion-electron interaction renormalized by the dielectric response of the target. Numerical calculations are presented and analyzed for the electron emission from the conduction band of an aluminum surface upon proton impact. Particular attention is devoted to the influence of the dielectric screening on the energy distributions and the angular distributions of the ejected electrons. In addition, the role of the surface electronic structure is studied.

• OSTI ID: 20640071
• Journal Information: Physical Review. A, Vol. 68, Issue 2; Other Information: DOI: 10.1103/PhysRevA.68.022902; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM
ANGULAR DISTRIBUTION
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRON EMISSION
ELECTRON-ION COUPLING
ELECTRONIC STRUCTURE
ELECTRONS
ENERGY SPECTRA
EXCITATION
ION-ATOM COLLISIONS
IONS
PROTONS
REFLECTION
SURFACES
VALENCE