Coaxial measurement of the translational energy distribution of CS produced In the laser photolysis of CS2 at 193 nm

Article abstract of DOI:10.1063/1.449152

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.

Full text of DOI:10.1063/1.449152

Coaxial measurement of the translational energy distribution of CS produced in the
laser photolysis of CS2 at 193 nm
V. R. McCrary, R. Lu, D. Zakheim, J. A. Russell, J. B. Halpern, and W. M. Jackson
Citation: The Journal of Chemical Physics 83, 3481 (1985); doi: 10.1063/1.449152
View online: http://dx.doi.org/10.1063/1.449152
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/83/7?ver=pdfcov
Published by the AIP Publishing
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