Dynamics study of the OH+O-2 branching atmospheric reaction. 3. Dissociation in collisions of vibrationally excited reactants

We discuss the dissociation of the OH radical in the title molecular collis ions when both species are vibrationally excited. An analysis of the O-2 di ssociation is also reported. All calculations employed the quasiclassical t rajectory method and a realistic double many-body expansion (DMBE) potentia l energy surface for groundstate HO3. The results are compared with those r eferring to formation of HO2 and O-3 under similar conditions. Possible imp lications on atmospheric models for ozone production are tentatively assess ed.