Abstract
Full rotational analysis was performed to analyze quantum beats in the S 1 dynamics of glyoxal. The rotationally resolved fluorescence spectra of trans-glyoxal system was recorded to analyze the rovibrational states in the vibrational energy range of 2770-3150 cm -1 . The decays of emission from various rovibrational levels of glyoxal were measured in the excitation wavelength range of 392-404 nm. Analysis suggested that the fluorescence decays exhibited biexponential behavior near vibration energy of 3470 cm -1 for single-triplet interaction.