Effect of excited states of atomic oxygen ions on the reaction rates and thermal balance in the F-region

Details Effect of excited states of atomic oxygen ions on the reaction rates and thermal balance in the F-region Effect of excited states of atomic oxygen ions on the reaction rates and thermal balance in the F-region

Feb 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973p%26ss...21..159r&link_type=abstract

Planetary and Space Science, Volume 21, Issue 2, p. 159-163.

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A recent paper by Rutherford and Vroom (1971) showed that the charge transfer reaction of the metastable O+(2D) with N2 was significantly faster than the ground state, O+(4S), reaction. Similarly, Stebbings et al. (1966) showed that the charge transfer with O2 was at least an order of magnitude greater for the excited O+(2D) than the ground state atomic oxygen ion. Thus a substantial portion of the atomic oxygen ions in the O+(2D) state will provide an important source of N2+ and O2+ which will have the effect of increasing the electron-ion recombination rate. The excited states of atomic oxygen ions can also undergo de-excitation by means of radiative transitions or collisional electron deactivation. The electron deactivation provides the electrons with several eV of energy for each collision, and thus provides a highly efficient heating source for the ambient electrons. This paper presents the reaction rates for the metastable states of O+ and other relevant data needed to calculate the electron-ion recombination rate and the ambient electron heating rate. A comparison is made to indicate how much effect the excited states of O+ have on these two processes in the F-region.

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