Time-resolved Fourier transform infrared study of the 193 nm photolysis of SO2

The 193 nm photolysis of SO2 has been studied by monitoring the infrared emission of the vibrationally excited species using time-resolved FTIR emission spectroscopy. Evidence for a direct electronic transition from the C state to the ground state of SO2 was found in addition to photodissociation following the 193 nm excitation. Relaxation rate constants for the observed vibrationally excited species, SO, SO2(ν1), and SO2(ν3), were calculated from the experimental decays.