Green's function calculation of ionization energies of Ca (Z=20), Kr (Z=36), Sr (Z=38) and Yb (Z=70)

The Ca 3s, Kr 4s, Sr 4s and Yb 5s atomic ionization spectra are calculated using the one-particle Green's function method within the framework of Random phase approximation with exchange. Pronounced final ionic correlation effects are found for these levels. The relative intensity of the main ionic state is reduced considerably byns ^?1?np ^?2 nd super Coster Kronig process. The ionization energy of the main ionic state is shifted as much as ～4 eV from the relativistic Hartree-Fock ΔSCF ionization energy byns ^?1?np ^?2 nd super Coster-Kronig process. The existence of strongnp ^?2 nd ² S satellite is predicted for these levels.