Relativistic fluorescence yields for hollow atoms in the range 12⩽Z⩽56

Energies and electric dipole rates of x rays from doubly ionized K shells of atoms in the range Z=12 to 56 have been calculated in the active space approximation using multiconfiguration Dirac-Fock wave functions with the inclusion of higher order relativistic corrections. Using a scaling procedure on the already available relativistic radial matrix elements for a single vacancy in the K shell, the Auger rates have been calculated for the empty K shell. The present investigation shows that though the contribution from relativistic correlation to the Kα x-ray hypersatellite energies is not significant, the strength of correlation on the x-ray rates is appreciable, especially for low Z elements. It is observed that the contribution to single configuration Kα₂^h rate of low Z ions is essentially from electron-electron correlation whereas Breit interaction contributes significantly to the Kα₂^h rate of high Z elements. The Kα₁^h rate is affected both by correlation and higher order relativistic corrections. The computed results for the x-ray and Auger transitions as well the fluorescence yields of double hole K shell of various ions are reported and compared with other available values.