Near-threshold multielectronic effects in the Cu K{alpha}{sub 1,2} x-ray spectrum
Journal Article
·
· Physical Review. A
- Division of X-Ray Physics, Department of Physical Sciences, P.O. Box 64, FIN-00014 University of Helsinki (Finland)
- Physics Department, Bar-Ilan University, Ramat-Gan 52900 (Israel)
- NSLS, Brookhaven National Laboratory, Upton, New York 11973 (United States)
The variation with excitation energy of the line shapes of the Cu K{alpha}{sub 1,2} x-ray spectrum was measured with high energy resolution near the K-shell threshold. Fits with ab initio Dirac-Fock calculated spectra allow us to estimate separately the magnitudes and energy variations of the 3d electron shakeup and shakeoff probabilities from threshold to saturation. The Thomas model is found to account well for the intensity evolution, in contrast with shakeoff from deeper shells. A suggested, yet unexplained, strong dependence of the shakeoff intensity saturation range on the shell number is confirmed.
- OSTI ID:
- 20633710
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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