Decay of the 2p54s, 2p53d and 2p54d states of Ar studied by utilizing the Auger resonant Raman effect

The 2p electrons of Ar have been excited selectively to the 4s, 3d and 4d orbitals and high-resolution de-excitation spectra have been recorded by utilizing the Auger resonant Raman effect. Fine structures in the resonant Auger spectra have been clearly resolved for the first time. The roles of shake transitions and configuration interaction between the 3p4nd and 3p4(n+1)s, n = 3 - 6 final states in producing the complicated fine structures have been discussed.