Relativistic many-body perturbation theory calculations on Be, Ne6+, Ar14+ AND Ne

✍ Scribed by Yasuyuki Ishikawa; Hideo Sekino; Robert C. Binning Jr.

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 431 KB
• Volume: 160
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(89)87583-9

✦ Synopsis

Relativistic diagrammatic perturbation theory calculations have been performed on the ground states of the beryllium atom and the isoelectronic species Ne6+ and A?'+. Reference states of single-configuration Dime-Fock wavefunctions were computed by expansion in basis sets of Gaussian functions. Second-and third-order radial correlation corrections were computed and compared to results obtained by Quiney et al. using a large basis of Slater-type functions. Second-and third-order radial and angular corrections for Ne have been computed with moderately large well-tempered Gaussian basis sets of varying expansion lengths.