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Electron-impact ionisation of atoms and ions

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Authors
Bray, Igor
Fursa, Dmitry
Stelbovics, Andris
Date
2009
Type
Conference Paper

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Bray, I. and Fursa, D.V. and Stelbovics, A.T. 2009. Electron-impact ionisation of atoms and ions, in Jim F Williams, Steve Buckman, Evan J Bieske (ed), 8th Asian International Seminar on Atomic and Molecular Physics (AISAMP), Nov 24 2008, pp. 1-4. University of Western Australia: Institute of Physics Publishing Ltd.
Source Title
Journal of Physics: Conference Series
Source Conference
8th Asian International Seminar on Atomic and Molecular Physics (AISAMP)
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Faculty
School of Science and Computing
Faculty of Science and Engineering
Department of Imaging and Applied Physics
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Copyright © 2009 Institute of Physics and IOP Publishing Limited

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Abstract

Recently the non-relativistic convergent close-coupling method has been extended into the relativistic domain [1]. When applied to electron impact collision processes for highly charged hydrogen-like ions, the RCCC method that utilizes relativistic kinematics and the Coulomb interaction in the absence of QED Breit and Mller corrections is suitable for target ions with atomic number Z up to Z 30. For Z larger than 30, such QED corrections become significant and must be included in the calculations. We have modified the RCCC computer code accordingly and report the results for Z = 100 selected excitation cross sections and for U91+ ionization cross sections which were found to be in good agreement with previous calculations of Fontes et al.[2].