The temperature dependence of the rate constant for O+ + NO → NO+ + O from 23 to 30000 K

The rate constant, k, for the charge transfer reaction O+ + NO+ +_O, known to be slow at 300 K (8 × 10−13 cm3s−1) and to increase with relative kinetic energy (or temperature, T) to 2 × 10−10 cm3 s−1 at 30000 K, has been measured down to 23 K. The results show that k also increasesa t low T (3.2 × 10−11 cm s−1 at 23 K) which is interpreted as being due to the formation of a long-lived complex in which electronic state curve crossings occur.