Electron spectroscopy studies of atomic inner-shells

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

OSTI ID:394289

Le Brun, T; Southworth, S H; Jung, M ^[1]

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1. Argonne National lab., IL (United States); and others

The authors have used electron spectroscopy combined with tunable synchrotron radiation in the 2-5 keV energy range for several studies of atomic inner-shell excitation and vacancy decay processes. These studies have focused on Ar 1s photoelectron spectra and Ar KLL and LMM Auger electron spectra. The electron spectra provide an overview of the states involved in nonradiative decay following excitation of a 1s electron to a bound or continuum state. Detailed studies have also been made of doubly-excited states in the excitation and photoelectron spectra and of Auger resonant Raman scattering. In addition, several novel results have been obtained by recording electron spectra in coincidence with fluorescent x-rays to select subsets of the decay pathways. Distortion of the Ar Is photoelectron spectrum due to post-collision interaction with K-Auger electrons is eliminated in the coincidence spectra. The complexity of LMM vacancy-cascade electron spectra is greatly reduced when measured in coincidence with K-fluorescence, allowing state-specific assignments.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 394289
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON
AUGER EFFECT
INNER-SHELL EXCITATION
PHOTOELECTRON SPECTROSCOPY
RAMAN EFFECT
SYNCHROTRON RADIATION