RELATIVISTIC L-SHELL AUGER AND COSTER-KRONIG RATES AND FLUORESCENCE YIELDS

Relativistic calculations of radiationless transition rates to L-subshell vacancy states in selected atoms with 70≤Z≤96 have been performed. The Auger and Coster-Kronig transition probabilities are calculated from perturbation theory, assuming frozen orbitals, in the Dirac-Hartree-Slater approach. Transition rates, fluorescence yields, and Coster-Kronig yields are compared with nonrelativistic theoretical results and with experiment. Relativity is found to affect the L-subshell Auger widths by (10-25)% and individual transition rates to certain j-j configurations by as much as 40% at Z=80. The widths of Li vacancy states and the L2 Coster-Kronig yields f23 from these relativistic calculations agree much better with experiment than earlier nonrelativistic theoretical values. © 1979 The American Physical Society.