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A relationship between correlation energies and sizes: The helium-like ions

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Abstract

The correlation energy (E corr) is found to be inversely proportional to the product of the electron pair size (<r2>) and the square of the effective nuclear charge (Z eff) for the helium-like ions.

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Bernardi, F., Csizmadia, I.G., Smith, V.H. et al. A relationship between correlation energies and sizes: The helium-like ions. Theoret. Chim. Acta 37, 171–176 (1975). https://doi.org/10.1007/BF00549567

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Key words

  • Helium-like ions
  • Correlation energies for helium-like ions