Development of a configuration-interaction plus all-order method for atomic calculations

摘要

We develop a theoretical method within the framework of relativistic many-body theory to accurately treatcorrelation corrections in atoms with few valence electrons. This method combines the all-order approachcurrently used in precision calculations of properties of monovalent atoms with the configuration-interactionapproach that is applicable for many-electron systems. The method is applied to Mg, Ca, Sr, Zn, Cd, Ba, andHg to evaluate ionization energies and low-lying energy levels.