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Laser-Excited Fluorescence Studies of IR Multiple Photon Dissociation Fragments: NH2(2B1) from CH3NH2 and NH3

  • G. Hancock
  • R. J. Hennessy
  • T. Villis
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 6)

Abstract

Laser excited fluorescence has been used to detect ground state NH2 radicals produced by the infrared multiple photon dissociation (MPD) of CH3NH2 and NH3. A pulsed, line tunable CO2 laser was used to dissociate the molecules; the multimode output, typically 4J total energy, was focussed to a spot ~3mm in diameter inside the reaction vessel. A pulsed dye laser beam of slightly larger diameter intersected the CO2 beam spatially at right angles and at a time adjustable with respect to the CO2 pulse. NH2 was detected in a combination of the l11, 212 and 313 rotational levels of the 2B1(0,0,0) ground state by observing fluorescence following laser excitation at 492.55nm.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1979

Authors and Affiliations

  • G. Hancock
    • 1
  • R. J. Hennessy
    • 1
  • T. Villis
    • 1
  1. 1.Physical Chemistry LaboratoryOxford UniversityOxfordGreat Britain

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