Studies of the electron density at the nucleus and radial expectation values of the ground state for lithium-like systems from Z=11 to 18
Department of Physics, Beijing Institute of Technology, 100081 Beijing, P.R. China
Corresponding author: email@example.com
Revised: 14 September 2009
Published online: 24 November 2009
The electron density at the nucleus ρ(0) and radial expectation values 〈r n 〉 (n=-2–10) of the ground state for lithium-like systems from Z=11 to 18 are calculated with the full core plus correlation wave functions. By using these obtained expectation values, accurate inequalities of radial expectation values derived by Gálvez and Porras [Phys. Rev. A 44, 144 (1991)] are examined and verified. The final results show that the full core plus correlation wave functions for lithium-like systems with higher nuclear charge are also accurate in the full configuration space and can give satisfactory electron density at the nucleus and radial expectation values.
PACS: 31.15.-p – Calculations and mathematical techniques in atomic and molecular physics / 31.15.ac – High-precision calculations for few-electron (or few-body) atomic systems / 31.15.ve – Electron correlation calculations for atoms and ions: ground state
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009