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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 5
BKCSDE 21(5)
May 20, 2000 

 
Title
Predissociation of the A2∑+ (v'=4) States of OH: Effects of Multichannel Asymptotic Interactions
Author
Sungyul Lee
Keywords
Abstract
Quantum mechanical analysis is presented for the photodissociation dynamics of the v'=4 levels of the A²∑+ state of the OH molecule. We focus on the effects of the multichannel interactions between the asymptotically degenerate states in the recoupling region to see how they affect the dynamics near the predissociating reso-nances. Both the scalar (total cross section and branching ratios) and the vector properties (angular distributions and alignment parameters) of O(³Pj,j = 0, 1, 2) are treated. The resonances are predicted to be highly Lorentzian, and the branching ratios do not change much across them. Vector properties, however, show very delicateeffects of the multichannel interactions and overlapping near the isolated and overlapping resonances. Computed resonance lifetimes agree reasonably well with experimental results.
Page
497 - 502
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