Electron-impact double ionization of magnesium

Theory and experiment are compared for the electron-impact double ionization of Mg. Direct ionization cross sections, involving the simultaneous ionization of both 3s electrons, are calculated using a non-perturbative time-dependent close-coupling method. Indirect ionization cross sections, involvin...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2009-11, Vol.42 (21), p.215204-215204 (5)
Main Authors: Pindzola, M S, Ludlow, J A, Robicheaux, F, Colgan, J, Griffin, D C
Format: Article
Language:English
Subjects:
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Atomic excitation and ionization by electron impact
Electron scattering
Exact sciences and technology
Optics
Physics
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Summary:Theory and experiment are compared for the electron-impact double ionization of Mg. Direct ionization cross sections, involving the simultaneous ionization of both 3s electrons, are calculated using a non-perturbative time-dependent close-coupling method. Indirect ionization cross sections, involving the ionization of either a 2p or 2s electron followed by autoionization, are calculated using a perturbative time-independent distorted-wave method. At low energies the direct ionization cross sections are found to be in good agreement with experiments, while at the higher energies the indirect ionization cross sections are also found to be in good agreement with experiments.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/42/21/215204