Chemical Physics Letters, Vol.340, No.1-2, 62-70, 2001
OH(nu)+O-3: Does chemical reaction dominate over nonreactive quenching?
We discuss the title atmospheric reaction for vibrational excited states of OH over the range 0 less than or equal to v less than or equal to 9. All calculations have employed the quasi-classical trajectory (QCT) method and a realistic double many-body expansion (DMBE) potential energy surface for HO4 ((2)A). For v = 9, the calculated thermal rate coefficient is found to agree with measurements of OH quenching reported by others, which has been attributed to both chemical reaction and nonreactive collisions. The temperature dependence of the rate constant is described by a simple model for all studied vibrational states of OH.