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

  • Alexei M. Frolov
  • David M. Wardlaw
Regular Article


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.


Computational Methods 


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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of Applied Mathematics, University of Western OntarioOntarioCanada
  2. 2.Department of ChemistryMemorial University of NewfoundlandNewfoundland and LabradorCanada

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