D. Azinovic et al., PHOTOASSOCIATION AND BOUND-BOUND EXCITATION INTO THE 2(2)PI STATE OF LIZN, LICD, AND NAZN MOLECULES, Physical review. A, 53(3), 1996, pp. 1323-1329
The photoassociation and bound-bound excitation processes of alkali-me
tal-group-IIB molecules have been studied for the LiZn, LiCd, and NaZn
molecules. We considered two main factors relevant to these processes
, namely, the densities of collision complexes and the relevant absorp
tion coefficients. Densities in the vapor mixture were manipulated by
preparation of different metal alloys, whereas the free-bound or bound
-bound absorption is selected by changing a laser wavelength used for
the excitation. The 2 (II)-I-2 states were directly excited by the las
er wavelength in the spectral range 435-450 nm. The densities of the L
iZn, LiCd, and NaZn excimers were estimated from alkali-metal and Zn (
Cd) densities using the dissociation equilibrium equation for the corr
esponding excimers in the ground state. The experimentally observed Li
Zn excimer band at 477 nm was satisfactory compared with the appropria
te theoretical simulation, assuming free-bound excitation of the 2 (II
)-I-2 state at 438.5 nm.