Angular distributions for photodissociation of O2 in the Herzberg continuum
1998; American Institute of Physics; Volume: 108; Issue: 17 Linguagem: Inglês
10.1063/1.476141
ISSN1520-9032
AutoresBart Buijsse, W. J. van der Zande, André T. J. B. Eppink, David H. Parker, B. R. Lewis, S. T. Gibson,
Tópico(s)Mass Spectrometry Techniques and Applications
ResumoPhotodissociation in the Herzberg continuum of molecular oxygen has been studied at 236, 226 and 204 nm. Using ion-imaging and monitoring of O(3Pj), j=0, 1, and 2 product-atom angular distributions, the amount of parallel character of the transition was measured. In order to interpret these data, analyses of the photoabsorption oscillator strengths and the parallel-perpendicular nature of the Herzberg I, II and III bands, and extrapolation of these properties into the Herzberg-continuum region have been performed. Our measured fine-structure-averaged angular distributions are found to be consistent with this photoabsorption model. In addition, the dynamics of the dissociation process is discussed, based on the O-atom fine-structure distributions.
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