Formation of vibrationally excited CO in OCS photolysis Article

cited authors

  • Joens, JA; Bair, EJ

fiu authors

abstract

  • Measurements of the vibrational excitation following flash photolysis of OCS are reported in which the extent of vibrational excitation of the CO† product is inferred from changes in the vibronic continuum of OCS, which acts as a sink for excess vibrational energy in this system. The excitation resulting from primary photolysis is distinguished from that resulting from the reaction of S(1D) with OCS using gas mixtures which deactivate S(1D) in varying degrees. The average quantum states of the CO† product are as follows: OCS + hv → S(1D) + CO† v1 < 0.25; OCS + S(1D) → S2(1Δ) + CO†, v2 = 2.7 ± 0.5. The experiment yields total cross sections for removing S(1D) by various gases within the uncertainties of the values in the literature, that is Ar 0.011 ± 0.003, N2 0.059 ± 0.015, O2 0.066 ± 0.022, He <0.005, relative to the total cross section for OCS-S(1D). © 1984 American Chemical Society.

publication date

  • January 1, 1984

Digital Object Identifier (DOI)

start page

  • 6009

end page

  • 6014

volume

  • 88

issue

  • 24