Refinement of the aeronomically determined rate coefficient for the reaction of N 2 + with O
1979; American Geophysical Union; Volume: 84; Issue: A5 Linguagem: Inglês
10.1029/ja084ia05p01939
ISSN2156-2202
Autores Tópico(s)Atmospheric chemistry and aerosols
ResumoAn earlier aeronomic determination of the rate coefficient for the reaction using Atmosphere Explorer data indicated a small increase in k 1 with ion temperature, contrary to laboratory observations. This was incorrectly attributed to neglect of an increase in the N 2 + recombination rate with vibrational excitation. Recent aeronomical results have shown that the rate coefficient for charge exchange of O + (² D ) with N 2 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 N 2 quenching of O + (² D ) yields a temperature dependence in excellent agreement with the laboratory results for k 1 .
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