Physics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994angeo..12.1085p&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 12, no. 10-11, p. 1085-1090
Physics
5
Atmospheric Models, D Region, E Region, Electron Density (Concentration), Electron Scattering, Molecular Excitation, Nitrogen, Oxygen, Photoionization, Vibrational States, Approximation, Boltzmann Distribution, Continuity Equation, Electron Energy, Energy Distribution, Harmonic Functions, Lyman Alpha Radiation
Scientific paper
In this paper we present the results of a study of the effect of vibrationally excited oxygen, O2(*), and nitrogen, N2(*), on the electron density, N(sub e), and the electron temperature, T(sub e), in the D and E regions. The sources of O2(*) are O-atom recombination, the photo-dissociation of O3, and the reaction of O3 with O at D region altitudes. The first calculations of O2(*) (j) number densities, N(sub j), are obtained by solving continuity equations for the models of harmonic and anharmonic oscillator energy levels, j = 1-22. It is found that day time values of N(sub j) are less than nighttime values. We also show that the photoionization of O2(*) (j greater than or equal to 11) by L-alpha-radiation has no influence on the D region N(sub e). In the nighttime D region the photoionization O2(*) (j greater than or equal to 11) by scattered L-alpha-radiation can be a new source of O2(+). We show that the N2(*) and O2(*) de-excitation effect on the electron temperature is small in the E region of the ionosphere and cannot explain experimentally observed higher electron temperatures.
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