DYE-LASER SATURATION SPECTROSCOPY OF THE 23S1-23P TRANSITION IN LI-6+,LI-7+ IONS

The metastable 23S1 state and the short lived 23P states of the helium-like6, 7Li+ ion spectra have been investigated by dye laser saturation spectroscopy in a low-energy Li+ ion-beam and fluorescence light detection. The hyperfine structure splittings of all the levels, the 23P fine structure intervals and the isotope shift of the 23S1-23P transitions have been measured. These measurements were made by application of a specially constructed tunable dye laser system capable of single-mode laser scans over more than 60 GHz. © 1979 Springer-Verlag.