Refinement of the aeronomically determined rate coefficient for the reaction of N2/+/ with O

Details Refinement of the aeronomically determined rate coefficient for the reaction of N2/+/ with O Refinement of the aeronomically determined rate coefficient for the reaction of N2/+/ with O

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.1939t&link_type=abstract

Journal of Geophysical Research, vol. 84, May 1, 1979, p. 1939-1941.

Physics

1

Aeronomy, Atmospheric Chemistry, Nitrogen Ions, Oxygen Atoms, Reaction Kinetics, Coefficients, Explorer Satellites, Molecular Ions, Recombination Reactions

Scientific paper

An earlier aeronomic determination of the rate coefficient for the reaction N2(+) + O yields NO(+) + N using Atmosphere Explorer data indicated a small increase in the rate coefficient with ion temperature, contrary to laboratory observations. This was incorrectly attributed to neglect of an increase in the N2(+) recombination rate with vibrational excitation. Recent aeronomical results have shown that the rate coefficient for charge exchange of O(+)(2D) with N2 is about an order of magnitude smaller at thermal temperatures than at energies greater than 0.5 eV (i.e., energies at which laboratory measurements have been made). It is shown that the use of the smaller charge exchange rate coefficient coupled with recent results on N2 quenching of O(+)(2D) yields a temperature dependence in excellent agreement with the laboratory results for the rate coefficient.

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