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Ion core approximation in calculations of excited atomic states

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Abstract

A one-configuration approximation is used to analyze the possibility of employing the “frozen” ion core model to calculate excited states with low-lying configurations of the same symmetry when the wave functions of the excited states are orthogonal to the function of the ground state. The nonorthogonality of the wave functions of different excited configurations is then weak. A calculation is made for certain Isns1S and 1s22sns1S terms of two-and four-electron ions, respectively, and the relaxation effects in the core are investigated for these excited states. This approximation is employed to obtain a variational equation for “virtual” orbitals allowing for the core relaxation.

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Authors and Affiliations

  1. V. D. Kuznetsov Siberian Physicotechnical Scientific-Research Institute at the State University, Tomsk

    V. M. Zelichenko, B. F. Samsonov & E. I. Cheglokov

Authors
  1. V. M. Zelichenko
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  2. B. F. Samsonov
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  3. E. I. Cheglokov
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Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 71–77, June, 1980.

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Zelichenko, V.M., Samsonov, B.F. & Cheglokov, E.I. Ion core approximation in calculations of excited atomic states. Soviet Physics Journal 23, 523–529 (1980). https://doi.org/10.1007/BF00892322

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  • DOI: https://doi.org/10.1007/BF00892322

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