X-ray fluorescence and Auger-electron coincidence spectroscopy of vacancy cascades in atomic argon
- Electron and Optical Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- EPSRC Daresbury Laboratory, Warrington WA44AD (United Kingdom)
Argon L{sub 2,3}-M{sub 2,3}M{sub 2,3} Auger-electron spectra were measured in coincidence with K{alpha} fluorescent x rays in studies of K-shell vacancy decays at several photon energies above the K threshold and on the 1s{r_arrow}4p resonance. The complex spectra recorded by conventional electron spectroscopy are greatly simplified when recorded in coincidence with fluorescent x rays, allowing a more detailed analysis of the vacancy cascade process. The resulting coincidence spectra are compared with Hartree-Fock calculations, which include shake-up transitions in the resonant case. Small energy shifts of the coincident electron spectra are attributed to postcollision interaction with 1s photoelectrons. {copyright} {ital 1997} {ital The American Physical Society}
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 503687
- Journal Information:
- Physical Review A, Vol. 55, Issue 6; Other Information: PBD: Jun 1997
- Country of Publication:
- United States
- Language:
- English
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