Reactions of N(2 2D) and N( 22P) with O2

Abstract

The rate constants for the reactions of N(2 ²D)+ O₂ and N(2 ²P)+ O₂ have been measured by employing a pulse radiolysis–resonance absorption technique at temperatures between 210 and 295 K. The rate constants were expressed by the following Arrhenius equations: k_{N(²D)+ O2}= 9.4 × 10^–12 exp(–210/T) and k_{N(²P)+ O2}= 3.1 × 10^–12 exp(–60/T) in units of cm³ s^–1.

The results for N(²D)+ O₂ were compared with the results of quasiclassical trajectory calculations on the basis of modified LEPS potential-energy surfaces. It is suggested that the main exit channel for the N(²D)+ O₂ reaction is the production of O(¹D) under the present conditions.