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Valence-shell double photoionization of alkaline-earth-metal atoms

Kheifets, A. and Bray, I. (2007) Valence-shell double photoionization of alkaline-earth-metal atoms. Physical Review A - Atomic, Molecular, and Optical Physics, 75 (4).

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We apply the convergent close-coupling formalism to describe direct double photoionization (DPI) of the valence n s2 shell of alkaline-earth-metal atoms: beryllium (n=2), magnesium (n=3), and calcium (n=4). We consider the range of photon energies below the onset of resonant and Auger ionization processes where the subvalent and core electrons can be treated as spectators. By comparing alkaline-earth-metal atoms with helium, we elucidate the role of the ground state and final ionized state correlations in DPI of various quasi-two-electron atoms.

Publication Type: Journal Article
Murdoch Affiliation: Centre for Atomic, Molecular and Surface Physics
Publisher: The American Physical Society
Copyright: © 2007 The American Physical Society
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