The O⁺+ NO → O + NO⁺reaction rate from 300°K to 0.55-eV ion mean energy

The rate coefficient of the reaction O+ + NO → O + NO+ has been measured as a function of the ion kinetic energy using a drift tube-mass spectrometer apparatus. The rate coefficient decreases slowly from a value of (8.0 ± 1.2) × 10−13 cm³/s at 300°K to a minimum of ∼7 × 10−13 cm³/s at 0.1 eV and then increases to a value of (5.7 ± 0.9) × 10−12 cm³/s at 0.55-eV ion mean energy. Thus under expected auroral conditions the charge transfer reaction would neither provide a significant source of NO+ nor a significant removal of O+ ions.