ELECTRONIC TRANSITIONS OF PALLADIUM AND VANADIUM DIMER

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The laser induced fluorescence (LIF) spectrum of palladium dimer (Pd$_{2}$) in the visible region between 480 and 700 nm has been studied. Five vibrational bands were recorded and analyzed; they are assigned to a $^{3} \Pi _{g}$ - X$^{3} \Sigma _{u} ^{+}$ system. The vibrational frequency of the ground X$^{3} \Sigma _{u} ^{+}$ state has been determined to be 211.4 cm$^{-1}$. This is the first experimental observation of the LIF spectrum of Pd$_{2}$. In addition, the LIF spectrum of vanadium dimer (V$_{2}$) 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.

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Author Institution: Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong

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