Atomic structure calculations of [ital KLL] Auger spectra from highly charged ion--solid-surface collisions

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.50.540· OSTI ID:7041759

Schippers, S; Limburg, J; Das, J; Hoekstra, R; Morgenstern, R ^[1]

---

1. Kernfysisch Versneller Instituut, Zernikelaan 25, NL-9747AA Groningen (Netherlands)

Systematic atomic structure calculations of [ital KLL] Auger electron spectra from hollow'' atom configurations 1[ital s]2[ital l][sup 2]3[ital l][sup [ital Z][minus]3] are performed for atomic numbers 6[le][ital Z][le]10. In comparison with the corresponding 1[ital s]2[ital l][sup 2] Li-like configurations it is shown that the additional [ital Z][minus]3 [ital M] electrons, apart from taking part in [ital LLM] Coster-Kronig transitions, can be regarded basically as mere spectator electrons, neither severely influencing the peak structure due to the Li-like core nor affecting the [ital KLL] Auger transition rates. However, due to screening effects the spectra are shifted to higher energies by an amount scaling with [radical][ital Z][minus]3 when adding the [ital Z][minus]3 [ital M] electrons. The results facilitate the identification of distinct narrow peaks in projectile [ital K] Auger spectra observed in slow highly charged ion-surface interactions. It is shown that especially competing [ital LLM] Coster-Kronig transitions have to be considered in order to account for the measured relative peak intensities. A cascade model of the last deexcitation steps of a highly charged ion in front of the surface based on the atomic structure data provides detailed insight into the time scales involved.

• OSTI ID: 7041759
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:1; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

665300* -- Interactions Between Beams & Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AUGER ELECTRON SPECTROSCOPY
CHARGED PARTICLES
COLLISIONS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
EXCITED STATES
INNER-SHELL IONIZATION
ION COLLISIONS
IONIZATION
IONS
K SHELL
L SHELL
METASTABLE STATES
MULTICHARGED IONS
OXYGEN IONS
SCATTERING
SEMIMETALS
SILICON
SPECTROSCOPY
SURFACES