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

Alexei M. Frolov () and David M. Wardlaw
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Alexei M. Frolov: Department of Applied Mathematics, University of Western Ontario
David M. Wardlaw: Memorial University of Newfoundland

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 9, 1-8

Abstract: 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.

Keywords: Computational; Methods (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70194-3

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