HYPERFINE STRUCTURE OF THE LEVEL OF LITHIUM-6 AND LITHIUM-7

The hyperfine structure of the level 2 2P1/2 of both 6Li and 7Li has been investigated by means of the optical–radio–frequency double-resonance method. The following values were obtained for the magnetic interaction constants of the two isotopes:[Formula: see text]The gJ value for the 2P1/2 level was found to be −0.6668 ± 0.0020.