Photoionization and Auger decay of the 3d vacancy state of atomic strontium: Electron-electron correlations

Journal Article · Sat Oct 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.042706· OSTI ID:20718742

Nikkinen, J ^[1]; Aksela, H; Heinaesmaeki, S; Sankari, R; Aksela, S ^[1]; Fritzsche, S ^[2]; Kukk, E ^[1]; Berrah, N ^[3]

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1. Department of Physical Sciences, University of Oulu, P.O. BOX 3000, FIN-90014 University of Oulu (Finland)
2. Department of Physics, University of Kassel, Heinrich-Plett-Strasse 40, D-34132 Kassel (Germany)
3. Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008-5151 (United States)

The 3d photoionization and subsequent normal Auger decay processes in atomic strontium have been investigated. To understand the electron spectra following photoionization of a 3d electron, a series of ab initio computations, based on the multiconfiguration Dirac-Fock method, were performed. From the calculated photoionization and Auger decay amplitudes the relative photoionization cross sections were derived, together with the total and partial Auger decay widths and relative Auger intensities. Emphasis was placed on the effects of electron-electron correlations in the 3d hole state. The theoretical predictions were compared to the high-resolution synchrotron radiation-induced photoelectron and Auger electron spectra.

• OSTI ID: 20718742
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AUGER ELECTRON SPECTROSCOPY
DECAY
DECAY AMPLITUDES
ELECTRON CORRELATION
ELECTRON SPECTRA
ELECTRONS
HARTREE-FOCK METHOD
HOLES
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
RESOLUTION
STRONTIUM
SYNCHROTRON RADIATION
VACANCIES