YUE QIAN, Y. W. NG AND A. S-C. CHEUNG, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong.
The laser induced fluorescence (LIF) spectrum of palladium dimer (Pd2) in the visible region between 480 and 700 nm has been studied. Five vibrational bands were recorded and analyzed; they are assigned to a 3 g - X3 u + system. The vibrational frequency of the ground X3 u + state has been determined to be 211.4 cm-1. This is the first experimental observation of the LIF spectrum of Pd2. In addition, the LIF spectrum of vanadium dimer (V2) has also been studied; several new transition band systems were observed in the wavelength between 480 and 530 nm. The analysis of the spectra recorded for these two molecules will be presented.