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  • American Institute of Physics (AIP)  (1)
  • 1
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Carbon disulfide (CS2) photolysis was investigated in the gas phase using an argon fluoride (ArF) laser at 193 nm. The coaxial time-of-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 than v‘=6. From a computer simulation of the experimental LIF data, a vibrational distribution was also obtained. Vibrational levels up to v‘=12 were found to be populated in a bimodal distribution, which peaks at v‘=4, and extends to v‘=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.
    Type of Medium: Electronic Resource
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