Photoion–Auger-electron Coincidence Measurements Near Threshold

Authors

Jon C. Levin, University of Tennessee - KnoxvilleFollow
C. Biedermann, University of Tennessee - Knoxville
N. Keller, University of Tennessee - KnoxvilleFollow
L. Liljeby, Manne Siegbahn Institute of PhysicsFollow
R. T. Short, Oak Ridge National Laboratory
Ivan A. Sellin, University of Tennessee - KnoxvilleFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

5-1991

Publication Title

Nuclear Instruments and Methods

Volume

B56-57

Issue

Part 1

First page number:

124

Last page number:

128

Abstract

The vacancy cascade which fills an atomic inner-shell hole is a complex process which can proceed by a variety of paths, often resulting in a broad distribution of photoion charge states. We have measured simplified argon photoion charge distributions by requiring a coincidence with a K-LL or K-LM Auger electron, following K excitation with synchrotron radiation, as a function of photon energy, and report here in detail the argon charge distributions coincident with K-L₁L₂₃ Auger electrons. The distributions exhibit a much more pronounced photon-energy dependence than do the more complicated non-coincident spectra. Resonant excitation of the K electron to np levels, shakeoff of these np electrons by subsequent decay processes, double-Auger decay, and recapture of the K photoelectron through postcollision interaction occur with significant probability.

Keywords

Argon; Atomic orbitals; Auger effect; Electron configuration; Electronic excitation; Gases; Rare; Photoelectrons; Photoionization

Disciplines

Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Elementary Particles and Fields and String Theory | Physical Chemistry

Language

English

Permissions

Use Find in Your Library, contact the author, or use interlibrary loan to garner a copy of the article. Publisher copyright policy allows author to archive post-print (author’s final manuscript). When post-print is available or publisher policy changes, the article will be deposited

Repository Citation

Levin, J. C., Biedermann, C., Keller, N., Liljeby, L., Short, R. T., Sellin, I. A., Lindle, D. W. (1991). Photoion–Auger-electron Coincidence Measurements Near Threshold. Nuclear Instruments and Methods, B56-57(Part 1), 124-128.