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Phys. Rev. A 65, 062716 (2002) [6 pages]

Photoionization studies of the 2p resonances of atomic calcium

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B. Obst1, J. E. Hansen2, B. Sonntag3, Ph. Wernet3, and P. Zimmermann1 *
1Institut für Atomare und Analytische Physik, Technische Universität Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
2Department of Physics and Astronomy, University of Amsterdam, Valckenierstraat 65, NL-1018 XE Amsterdam, Netherlands
3II. Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany

Received 9 July 2001; published 18 June 2002

The Ca 2p resonances at 345–355 eV were studied by photoion and photoelectron spectroscopy using monochromatized synchrotron radiation and atomic-beam technique. The analysis of the excitation and decay of these resonances shows strong configuration mixing between the different subshells of the valence electrons 4s, 3d, and 4p. In the case of the 2p3/2-1 resonance structure at 348 eV there are two excited states with nearly equal contributions from the configuration 2p53d4s2 and 2p53d24s, which gives rise to strong variations of the resonantly enhanced 3p4(3d,4s)3 photoelectron lines when scanning the photon energy across the resonance.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.65.062716
DOI: 10.1103/PhysRevA.65.062716
PACS: 32.80.Fb, 32.80.Hd

* Author to whom correspondence should be addressed.

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