A curvehyphen;crossing model for Heast;(23S)+Ne collisions consistent with differential and total scattering cross sections, and quenching rate constants

摘要

Heast;(23S)+Ne differential elastic scattering measurements in crossed supersonic beams over the energy range 0.6ndash;2.8 kcal/mol are combined with total cross section velocity dependence and quenching rate constant temperature dependence to determine a 3times;3 potential matrix characterizing a double curvehyphen;crossing model for the collision dynamics and energy transfer. The coupled radial Schrouml;dinger equations are integrated numerically to yield the appropriate cross sections. At low energy (E4 kcal/mol) a mixed adiabatic/diabatic twohyphen;state model derived from the potential matrix accurately represents the data. Dynamics in the threehyphen;state model, which is topologically similar to nonhyphen;adiabatic coupling involving charge transfer, is discussed, and the bearing of the model on collisional pumping of the HeNe 1.1 mgr; laser is assessed.