Other
Scientific paper
Mar 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975p%26ss...23..533c&link_type=abstract
Planetary and Space Science, vol. 23, Mar. 1975, p. 533-539.
Other
Collision Rates, Electron Scattering, Ionospheric Electron Density, Neutral Particles, Particle Collisions, Transport Properties, Atmospheric Models, Electron Distribution, Ionized Gases, Mathematical Models, Maxwell Equation, Upper Atmosphere, Velocity Distribution
Scientific paper
Calculations of electron transport coefficients in the ionosphere are simplified if the electron-neutral collision frequency can be expressed as a power law in velocity. A new method for determining the effective power law representation for electron-neutral collision frequencies of arbitrary velocity dependence is presented. This method is applied to ionospheric gases in a model calculation. Comparison with similar results of Schunk and Walker and with exact calculations of transport coefficient correction factors demonstrates this technique to be more accurate than the other. Effective power law indexes are computed for both Banks' and Itikawa's collision frequencies. Relative differences between these indexes are found to be considerably larger than the differences between the collision frequencies themselves; however, the effects on transport calculations are shown to be smaller.
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