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>Coaxial measurement of the translational energy distribution of CS produced in the laser photolysis of CS2at 193 nm
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Coaxial measurement of the translational energy distribution of CS produced in the laser photolysis of CS2at 193 nm
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机译：Coaxial measurement of the translational energy distribution of CS produced in the laser photolysis of CS2at 193 nm
Carbon disulfide (CS2) photolysis was investigated in the gas phase using an argon fluoride (ArF) laser at 193 nm. The coaxial timehyphen;ofhyphen;flight (TOF) distributions of CS radicals produced in the photolysis have been measured. Photochemical fragments have been observed with translational energies below 3 kcal/mol. The vibrational distribution of the CS fragments was also probed by laser induced fluorescence (LIF), and these measurements confirm that significant amounts of CS radicals are produced in vibrational levels greater thanvlsquo;=6. From a computer simulation of the experimental LIF data, a vibrational distribution was also obtained. Vibrational levels up tovlsquo;=12 were found to be populated in a bimodal distribution, which peaks atvlsquo;=4, and extends tovlsquo;=12. There was a significant amount of rotational excitation of nascent CS produced in high vibrational levels of the ground state. The disjoint translational energy and CS vibrational energy distributions can be used to obtain an estimate of the S(3P) to S(1D) ratio of 0.66.
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