HYPERFINE-STRUCTURE OF THE NA-2 0(G)(-) LONG-RANGE MOLECULAR-STATE

We report a full theoretical calculation of the rovibrational structur e of the Na-2 O-g(-) state, including hyperfine structure. The purely long-range O-g(-) state has been observed in the photoassociation spec troscopy of ultracold trapped alkali-metal atoms. For the lighter alka li-metal atoms (Li, Na, and K), the purely long-range states are compl etely characterized by atomic data since the inner turning point of th e potentials are at internuclear separations where exchange interactio ns are still negligible.