Low-lying quartet states in Li-like neon

Inner-shell excited quartet states in Li-like neon have been investigated b y beam-foil spectroscopy in the XUV domain. The wavelengths of the transiti ons n = 2-n' = 3 and n = 2-n' = 4 from the states 1s2ln'l' L-4;l = s, p;l' = s, p, d in Ne vm were obtained using Hartree-Fock calculations and linear Z-expansions in the Li sequence. The results of these expansions are in go od agreement with the measured wavelengths. Our high resolving power allows us to enhance the wavelength accuracy of quartet transitions previously re ported. In addition, lifetimes of n' = 3 quartet states are measured. Final ly, an assignment for a transition from the non-autoionizing inner-shell ex cited doublet state Ne VIII 1s2p(P-3(o))3d D-2(o) is made and a Li-like qua rtet E2 transition in our spectra is discussed.