CORE POLARIZATION EFFECTS IN THE RELATIVISTIC QUANTUM-DEFECT-ORBITAL THEORY

The quantum-defect-orbital method has been reformulated in order to in clude both relativistic effects and the electron correlation described by a core polarization potential. All quantities appearing in this fo rmulation may be evaluated analytically. A comparison with experimenta l results demonstrates, on one hand, significance of the relativity-co rrelation corrections and, on the other, inadequacy of the relativisti c quantum-defect-orbital approach when indirect relativistic effects a re important, i.e. when atoms contain closed shells of d electrons.