Reinterpretation of the Alkali Chloride Dissociation Rates of R. Hartig et al. as Cl− Collisional Detachment Rates

Abstract

Thermal dissociation rates k_d for various alkali chlorides have been published by Hartig et al. We have reinterpreted their results in terms of a collisional detachment rate for ${\mathrm{Cl}}^{-}$ . Our interpretation implies a collisional detachment rate of ${\mathrm{Cl}}^{-}$ by $\mathrm{Ar}{\mathrm{\hspace{0.17em}k}}_{{\mathrm{Cl}}^{-}}(\mathrm{Ar}{\text{) ∼5×10}}^{\text{−10}}\exp \text{(−83\hspace{0.17em}000/RT)}{\mathrm{cm}}^3/\sec$ . Our reevaluation of their k_d also removes the large disagreement between their measured rates and calculated values of the thermal dissociation rates of the alkali chlorides using the theory of Bates and Flannery.