Journal article

Publication year: 1994

Pages: 540-552

Journal: Physical review A

Volume number: 50

Issue number: 1

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.50.540

Publisher: American Physical Society

Abstract: 

Systematic atomic structure calculations of KLL Auger electron spectra from ‘‘hollow’’ atom configurations 1s2𝑙23𝑙𝑍−3 are performed for atomic numbers 6≤Z≤10. In comparison with the corresponding 1s2𝑙2 Li-like configurations it is shown that the additional Z-3 M electrons, apart from taking part in 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 KLL Auger transition rates. However, due to screening effects the spectra are shifted to higher energies by an amount scaling with √Z-3 when adding the Z-3 M electrons. The results facilitate the identification of distinct narrow peaks in projectile K Auger spectra observed in slow highly charged ion-surface interactions. It is shown that especially competing 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.

Harvard Citation style: Schippers, S., Limburg, J., Das, J., Hoekstra, R. and Morgenstern, R. (1994) Atomic structure calculations of KLL Auger spectra from highly charged ion–solid-surface collisions, Physical review A, 50(1), pp. 540-552. https://doi.org/10.1103/PhysRevA.50.540

APA Citation style: Schippers, S., Limburg, J., Das, J., Hoekstra, R., & Morgenstern, R. (1994). Atomic structure calculations of KLL Auger spectra from highly charged ion–solid-surface collisions. Physical review A. 50(1), 540-552. https://doi.org/10.1103/PhysRevA.50.540