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Relativistic effects in the variable-screening model

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The variable-screening model devised for a quantitative treatment of screening effects in slow (quasimolecular) ion-atom collisions is extended to include relativistic effects. Relativistic correction terms corresponding to a relative energy correction of second order in the electron velocity are incorporated into the effective molecular single-electron Hamiltonian. The model is applied to the calculation of relativistic molecular-orbital correlation diagrams for the quasimolecular systems Br+Br, Xe+Xe, and I+Au. A detailed comparison of our results with the results of relativistic calculations for (unscreened) one-electron systems and calculations based on self-consistent field methods is performed. The agreement with Dirac-Fock-Slater results is fairly good, and could be improved further by read-justing the values of the parameters in the atomic potentials used to construct the effective molecular potential.

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Authors and Affiliations

  1. Hahn-Meitner-Institut für Kernforschung Berlin GmbH, Bereich Kern- und Strahlenphysik, Germany

    P. Kaufmann & U. Wille

  2. Fachbereich Physik, Freie Universität Berlin, Berlin, Germany

    P. Kaufmann & U. Wille

Authors
  1. P. Kaufmann
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  2. U. Wille
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Kaufmann, P., Wille, U. Relativistic effects in the variable-screening model. Z Physik A 279, 259–270 (1976). https://doi.org/10.1007/BF01408297

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  • DOI: https://doi.org/10.1007/BF01408297

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