Interpretation of rate constants of ion-molecule reactions in oxygen systems

Abstract

Existing data on the charge transfer reaction between O − and O 2 under nonequilibrium kinetic conditions realized in a drift tube experiment are shown to be in quantitative agreement with a theoretical model of endothermic ion-molecule reactions. For E/P 0 ≧ 20 V cm −1 torr −1 the bimolecular rate constant obeys the formula k = 3 × 10 −10 exp[−11 000/(0.33 T z + 50 E/P o )] cm 3 sec −1.