PHOTOCHEMICAL POPULATION OF KHG-ASTERISK STATES

The KHg excimer in the 2 (2) Pi state was produced in the photochemica l reaction between K-2(C-1 Pi(u)) and Hg(6(1)S(0)). The KHg 2 (2) Pi-1 (2) Sigma(+) transition was observed at about 640 nm. We performed qu antum mechanical spectral simulations for the KHg 2 (2) Pi-1 (2) Sigma (+) transition, using potential energy curves calculated by Czuchaj et al. [Chem. Phys. Lett. 199 (1992) 47]. Absorption of the KHg chemilum inescence by the overlapping K-2 X-B transition was studied in detail. Other KHg transitions observed to date in different experiments are d iscussed.