title: Correlation energies for He isoelectronic sequence with Z=2-116 from four-component relativistic configuration interactions.
abstract: The relativistic correlation energies (CEs) for the He isoelectronic sequence from 2He to 116Uuh were investigated using configuration-interaction (CI) calculations. We used a large universal-type Gaussian basis set, which gives accurate Dirac-Fock total energies for the ions under consideration. In contrast to nonrelativistic CEs, the relativistic CEs decrease monotonically with increasing nuclear charge, but the p-, d-, and f-partial CEs have a hump like the relativistic Hylleraas CI.
authors.affiliation: Department of Chemistry, Faculty of Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tatewaki