A S Kheifets and Igor Bray 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L211 doi:10.1088/0953-4075/36/13/103
Double shake-off model for the triple photoionization of beryllium
FREE ARTICLEA S Kheifets1 and Igor Bray2
Show affiliationsLETTER TO THE EDITOR
We propose a model for the triple photoionization of Be in which a core 1s electron absorbs the photon γ + 1s22s2Be → 
1p + 1s2s2Be+ and the valence 2s2 electrons are shaken off into continuum due to the sudden change of the core potential. We decompose the double shake-off amplitude into a single shake-off 2s2 → nss and a subsequent electron impact ionization of the doubly charged Be2+ ion s + 1sns Be2+ → 2l + 3l + 1s Be3+. The latter process is described by the T-matrix of inelastic electron scattering on the 'semi-hollow' 1sns Be2+ ion in the monopole singlet channel. The convergent close-coupling method is used to evaluate the T-matrix.
- PACS
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32.80.Rm Multiphoton ionization and excitation to highly excited states
34.80.Dp Atomic excitation and ionization
31.15.V- Electron correlation calculations for atoms, ions and molecules
- Subjects
- Dates
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Issue 13 (14 July 2003)
Received 2 April 2003
Published 16 June 2003
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Double shake-off model for the triple photoionization of beryllium
A S Kheifets and Igor Bray 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L211
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