Measurement of the rates of reaction of the ground and metastable excited states of O₂⁺, NO⁺and O⁺with atmospheric gases at thermal energy

A selected ion flow tube study of the reactions of NO+ and O+2 ions with some organic molecules: The potential for trace gas analysis of air

“…The NO ϩ and O 2 ϩ ions so formed undergo several collisions with the neutral gas atoms and molecules before they leave the source, so any longlived metastable ions ͑i.e., NO ϩ 3 ⌺ and O 2 ϩ 4 ⌸ which are so easily produced in low pressure, single collision, electron impact ion sources͒ are very likely to be quenched to their ground electronic states. 18 Certainly, we did not obtain any convincing experimental evidence ͑e.g., the unexpected appearance of endothermic reaction products or nonlinear decay plots 1 ͒ that measurable fractions of the NO ϩ and O 2 ϩ ions were in excited states.…”

Solar Cycle Changes in the Photochemistry of the Ionosphere and Thermosphere

“…As the major gas throughout most of the atmosphere, the N 2 density is not greatly affected by either dynamics or chemistry. Also, when N 2 is dissociated, it mostly recombines locally, whereas when O 2 is dissociated, Glosik et al [1978] it must diffuse below 100 km, where it is able to recombine via three-body reactions. Figure 3 shows the FLIP model ion and electron densities for 5 September 2005 and 17 March 1990.…”

Charge transfer and chemical reaction dynamics in hyperthermal O++NO collisions

“…Alternatively, the presence of even a small amount of O ϩ ( 2 D, 2 P) in our ion beam would have a similar result since these metastables have been shown to be as much as three orders of magnitude more efficient in reactions with NO. 28 Figures 2 and 3 present the results of TOF measurements of the ionic products of reactions ͑1͒ and ͑4͒, NO ϩ and O 2 ϩ , respectively. NO ϩ TOF measurements were carried out at collision energies of 1.3, 3.3, 5.2, and 9.1 eV, while the O 2 ϩ data were obtained at collision energies of 3.3 and 5.9 eV.…”