Determination of the N2 recombination rate coefficient in the ionosphere

Details Determination of the N2 recombination rate coefficient in the ionosphere Determination of the N2 recombination rate coefficient in the ionosphere

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4..431o&link_type=abstract

Geophysical Research Letters, vol. 4, Oct. 1977, p. 431-433.

Physics

5

Atmospheric Chemistry, Electron-Ion Recombination, Ionospheric Electron Density, Nitrogen Ions, Recombination Coefficient, Molecular Excitation, Photoionization, Satellite Observation

Scientific paper

Measurements of aeronomic parameters made by the Atmosphere Explorer-C satellite are used to determine the recombination rate coefficient of N2(+) in the ionosphere. The rate is found to increase significantly with decreasing electron density. Values obtained range from approximately 1.4 x 10 to the -7th to 3.8 x 10 to the -7th cu cm/sec. This variation is explained in a preliminary way in terms of an increase in the rate coefficient with vibrational excitation. Thus, high electron densities depopulate high vibrational levels reducing the effective recombination rate, whereas, low electron densities result in an enhancement in the population of high vibrational levels, thus, increasing the effective recombination rate.

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