Reactions of O^+ with N2 and NO: recoil velocity measurements in a guided-ion beam experiment
Abstract
Previous studies of the reactions of O^+ with N2 and NO indicate very small rates at thermal energies, with dramatic increases in reaction efficiency at higher collision energy. Recent interest in high pressure air plasmas and other extreme environments has led to the need for better characterization of these unusual exothermic reactions in the near-thermal to hyperthermal energy range, especially with regard to product state distributions. We have used the octopole guided-ion beam method to measure time-of-flight (TOF) spectra of the NO^+ produced in the reactions of ground state O^+ + N2 and O^+ + NO. The velocity-transformed TOF data indicate more than one mechanism for both reactions. This presentation will discuss the more remarkable features of these results, including the complex-mediated O^+ + N2 mechanism at hyperthermal collision energies. Where possible, the results are analyzed with the aid of the osculating complex model of chemical reaction and are compared to statistical theory.
- Publication:
-
APS Annual Gaseous Electronics Meeting Abstracts
- Pub Date:
- October 1999
- Bibcode:
- 1999APS..GECETP222L