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On accurate computations of slowly convergent atomic properties in few-electron ions and electron-electron correlations

Author

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  • Alexei M. Frolov

    (Department of Applied Mathematics, University of Western Ontario)

  • David M. Wardlaw

    (Memorial University of Newfoundland)

Abstract

We discuss an approach to accurate numerical computations of slowly convergent properties in two-electron atoms/ions which include the negatively charged Ps− (e − e + e −) and H− ions, He atom and positively charged, helium-like ions from Li+ to Ni26+. All these ions are considered in their ground 11S-state(s). The slowly convergent properties selected in this study include the electron-nulceus (r 2k eN) and electron-electron (r 2k ee) expectation values for k = 2, 3, 4 and 5.

Suggested Citation

  • Alexei M. Frolov & David M. Wardlaw, 2016. "On accurate computations of slowly convergent atomic properties in few-electron ions and electron-electron correlations," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(9), pages 1-8, September.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:9:d:10.1140_epjb_e2016-70194-3
    DOI: 10.1140/epjb/e2016-70194-3
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    Keywords

    Computational Methods;

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