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Estimation of the ground state correlation energy for isoelectronic series of 2 to 20 electrons

Rashid, Khalid
Fricke, Burkhard
Heinemann, Dirk
Saadi, Z. A.

Correlation energies for all isoelectronic sequences of 2 to 20 electrons and Z = 2 to 25 are obtained by taking differences between theoretical total energies of Dirac-Fock calculations and experimental total energies. These are pure relativistic correlation energies because relativistic and QED effects are already taken care of. The theoretical as well as the experimental values are analysed critically in order to get values as accurate as possible. The correlation energies obtained show an essentially consistent behaviour from Z = 2 to 17. For Z > 17 inconsistencies occur indicating errors in the experimental values which become very large for Z > 25.

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@article{urn:nbn:de:hebis:34-2008091523772,
  author    ={Rashid, Khalid and Fricke, Burkhard and Heinemann, Dirk and Saadi, Z. A.},
  title    ={Estimation of the ground state correlation energy for isoelectronic series of 2 to 20 electrons},
  copyright  ={https://rightsstatements.org/page/InC/1.0/},
  language ={en},
  year   ={1987}
}