The vibrational distribution of N2(+) in the terrestrial ionosphere

Details The vibrational distribution of N2(+) in the terrestrial ionosphere The vibrational distribution of N2(+) in the terrestrial ionosphere

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.7557f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Aug. 1, 1985, p. 7557-7567.

Physics

23

Atmospheric Chemistry, Ion Distribution, Ionospheric Ion Density, Nitrogen Ions, Solar Activity Effects, Vibrational Spectra, Atmospheric Models, Charge Transfer, Ground State, Solar Terrestrial Interactions

Scientific paper

The densities and vibrational distributions of N2(+) in the X2sigma g +, A2Pi u and B2sigma u + states in the daytime terrestrial ionosphere are computed for both low and high solar activity. Altitude profiles of the relative populations of the vibrational levels of N2(+) X2sigma g + are presented. The fraction of vibrationally excited N2(+) varies from 5 percent at 100 km to 50 percent at 450 km. Several models are examined in which loss of N2(+)(v) is enhanced for v greater than 0 and in which various assumptions are made about the vibrational distributions produced in charge transfer reactions. The N2(+) densities are significantly reduced if N2(+)(v) reacts with O at rates which are near gas-kinetic. Vibrational distributions of the A2pi u and B2sigma u + states are also presented, as well as volume emission rates and integrated overhead intensities of the major bands of the Meinel and first negative systems.

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