Two-Body Recombination of NO+with NO2−and NO3−Measured in a Thermal Plasma at 300°K

Abstract

Two ionic neutralization reactions have been studied with a mass spectrometer and with a planar rf-conductivity probe in the decay of a dilute thermal plasma at 300°K produced by megavolt-electron bombardment of ${\mathrm{N}}_2$:${\mathrm{O}}_2$ mixtures at 2 to 22 Torr. For N${\mathrm{O}}^{+}$ + N$\mathrm{O}_2^{}{}_{}{}^{-}$ recombination we obtain a rate coefficient of (1.75 ± 0.6) × ${10}^{-7\mathrm{}}$ ${\mathrm{cm}}^3$/sec, and for N${\mathrm{O}}^{+}$ + N$\mathrm{O}_3^{}{}_{}{}^{-}$ recombination, (3.4 ± 1.2) × ${10}^{-8\mathrm{}}$ ${\mathrm{cm}}^3$/sec.