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Inclusion of the Breit interaction in the relativistic convergent close-coupling method

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2009
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Conference Paper

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Bostock, C. and Fursa, D.V. and Bray, I. 2009. Inclusion of the Breit interaction in the relativistic convergent close-coupling method, in Ann Orel, Anthony F Starace, Dragan Nikolic, Nora Berrah, Thomas W Gorczyca, Emanuel Y Kamber, John A Tanis (ed), XXVI International Conference On Photonic, Electronic And Atomic Collisions, Jul 22 2009, pp. 2005-2005. Western Michigan University, Kalamazoo, Michigan, USA: Institute of Physics Publishing Ltd.
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Journal of Physics: Conference Series
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XXVI INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS
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School of Science and Computing
Faculty of Science and Engineering
Department of Imaging and Applied Physics
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© 2009 IOP Publishing Ltd

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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].