Vibrational temperature of molecular nitrogen in the auroral region

Details Vibrational temperature of molecular nitrogen in the auroral region Vibrational temperature of molecular nitrogen in the auroral region

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28..437p&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, May-June 1988, p. 437-441. In Russian.

Physics

Auroral Spectroscopy, F Region, Ionospheric Electron Density, Molecular Oscillations, Nitrogen, Vibrational Spectra, Gas Temperature, Molecular Diffusion

Scientific paper

The vibrational temperature (Tv) of molecular nitrogen in the F-region was calculated in cases of nighttime auroras of different duration and intensity. Calculation results agree well with measurements of Tv. It is shown that, above 200 km, a significant deviation of Tv from the neutral-gas temperature (greater than about 200 K) can be caused only by the excitation of N2 by thermal electrons with a density greater than (1-2) x 10 to the 5th/cu cm and a temperature greater than 2000 K above 150 km. The effect of excited-state N2 on the recombination rate of O(+) ions is investigated.

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