Doppler-Free Resonant Raman Auger Spectroscopy of Ne 2s2p 5 3p Excited States

Using very high resolution achieved by the Doppler-free resonant Raman Auger technique, we have resolved the lowest terms of the series of inner-valence excitations 2s2p 5 ( 1 , 3 P)np 2 S, 2 P, and 2 D in Ne + . The measured Auger anisotropic parameters and branching ratios help to establish the assignments of these levels. The measured lifetime widths are in reasonable agreements with ab initio calculations available in the literature.