Group VI Molecular Photolytic Dissociation Studies Using Rare Gas Halide Lasers

  • M. C. Gower
  • A. J. Kearsley
  • C. E. Webb
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 6)


The need for short wavelength lasers with high energy storage capabilities to meet the demands of laser fusion research [1] has stimulated interest in the dipole forbidden 1SO1D2, 3P1 transitions of the Group VI elements (O, S, Se, Te). In particular, laser action has been observed [2] on both of these transitions in Se when the OCSe molecule is photodissociated by V.U.V. fluorescence emission from e beam pumped Xe 2 * . Because the rate for OCSe quenching of Se(1SO) by the reaction
$$\begin{gathered}{\text{Se (}}{}^1\mathop {\text{s}}\nolimits_{\text{O}} {\text{) + OCSE }} \to {\text{Se}}{}_2^* + {\text{CO }} \hfill \\\hfill\\\end{gathered}$$
is large and the quenching by other likely products is small [3], it is necessary to substantially dissociate (bleach) the parent OCSe by the V.U.V. flux. In this paper we report measurements of quenching rate constants and radiative lifetimes of excited states of Se2, Se(1SO) production, and bleaching wave dynamics when Se2 is pumped at a variety of wavelengths by a pulsed U.V. laser.


Slow Component Radiative Lifetime High Energy Storage Beam Pump Double Exponential Decay 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1979

Authors and Affiliations

  • M. C. Gower
    • 1
  • A. J. Kearsley
    • 1
  • C. E. Webb
    • 1
  1. 1.Clarendon LaboratoryOxford UniversityOxfordEngland

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