STUDY OF THE LIHG EXCIMER - BLUE-GREEN BANDS

We report for the first time the production of the LiHg excimer by a p hotochemical reaction of excited Li-2 molecules with Hg(6s(2 1)S(0)) E xcitation energy was provided by a cw ultraviolet (UV)-argon ion laser operating in single-line and in multi-line mode or by pulsed XeCl exc imer laser at 3080 Angstrom. We observed bound-free emission of LiHg i n the form of diffuse bands peaking at 4450 and at 4670 Angstrom. The latter was structured by bound-bound emission lines. Relativistic ab i nitio calculations for the potential energy curves of LiHg and for the relevant dipole transition moments were performed. Using these result s, an interpretation of the observed emission is presented.