Differential Cross Sections and Product Rovibrational Distributions for ¹⁶O + ³²O<inf>2</inf> and ¹⁸O + ³⁶O<inf>2</inf> Collisions

Abstract

We report rotationally resolved opacity functions, product rotational distributions, and differential cross sections for the 16O + 16O16O (v = 0,j = 1) → 16O16O (v′ = 0,j′) + 16O and 18O + 18O18O (v = 0,j = 1) → 18O18O (v′ = 0,j′) + 18O collisions calculated by a time-independent quantum mechanical method employing one of the latest potential energy surface of ozone [ Dawes; et al. J. Chem. Phys. 2013, 139, 201103 ]. The results obtained for both collisional systems in the energy range 0.001-0.2 eV are examined, and interesting mass scaling effects have been discovered. The shapes of product angular distributions suggest a transition from an indirect to a direct scattering, via an osculating intermediate complex.