Flow-drift technique for ion mobility and ion-molecule reaction rate constant measurements. II. Positive ion reactions of N+, O+, and H2+ with O2 and O+ with N2 from thermal to [inverted lazy s]2 eV

Abstract

The positive ion‐molecule reactions $$\begin{array}{c}{\mathrm{N}}^{+}+{\mathrm{O}}_2\to {\mathrm{NO}}^{+}+\mathrm{O}\\ \to {\mathrm{O}}_2^{+}+\mathrm{N},\end{array}$$ $${\mathrm{N}}_2^{+}+{\mathrm{O}}_2\to {\mathrm{O}}_2^{+}+{\mathrm{N}}_2,$$ $${\mathrm{O}}^{+}+{\mathrm{O}}_2\to {\mathrm{O}}_2^{+}+\mathrm{O},$$ $${\mathrm{O}}^{+}+{\mathrm{N}}_2\to {\mathrm{NO}}^{+}+\mathrm{N},$$ were measured in a newly constructed flow‐drift tube apparatus. Reactions (a), (b), and (c) were measured from thermal energy to approximately 2 eV ion kinetic energy in the center of mass. Reaction (d) was measured from 0.3–3 eV ion kinetic energy. The data agree well with previous thermal values at low energies and agree well with beam data at the highest energy. In the case of all the reaction except (a), there is an initial decrease of the rate constant with increasing energy followed by an increase.