RELATIVISTIC MANY-BODY PERTURBATION-THEORY BASED ON THE NO-PAIR DIRAC-COULOMB-BREIT HAMILTONIAN - RELATIVISTIC CORRELATION ENERGIES FOR THE NOBLE-GAS SEQUENCE THROUGH RN(Z=86), THE GROUP-IIB ATOMS THROUGH HG, AND THE IONS OF NE ISOELECTRONIC SEQUENCE

Relativistic correlation energies have been computed for the neutral rare-gas atoms Ne, Ar, Kr, Xe, and Rn, the group-IIB atoms Zn, Cd, and Hg, and the ions of the Ne isoelectronic sequence with up to Z=100 by means of a recently developed relativistic many-body perturbation theory based on the no-pair Dirac-Coulomb-Breit Hamiltonian. Analytic basis sets of Gaussian-type functions are employed to expand the upper and lower components of the Dirac four-spinors in the matrix Dirac-Fock self-consistent-field and relativistic many-body perturbation procedures. The effects of the low-frequency Breit interaction on relativistic many-body effects for high-Z neutral atoms and Ne-like highly ionized ions are examined. © 1994 The American Physical Society.