Smallscale fluctuations in Dregion ionization due to hydrodynamic turbulence
Abstract
The fluctuations at small length scales in Dregion ionization caused by atmospheric turbulence are investigated. Consideration is given to the dynamics of the plasma, the statistical theory of turbulent advection, the relaxation to photochemical equilibrium, and the theoretical prediction of observed scattered power from electronconcentration fluctuations. The electronneutral and ionneutral collision frequencies for use in the continuum momentum equation are determined for lowfrequency phenomena in the lower ionosphere. It is found that the assumption of a displaced Maxwellian distribution function is not a good approximation for determining such electronneutral momentum transfer collision frequencies. Those collision frequencies which yield transport coefficients in agreement with kinetic theory are determined.
 Publication:

Unknown
 Pub Date:
 November 1976
 Bibcode:
 1976ssfd.rept.....H
 Keywords:

 D Region;
 Hydrodynamics;
 Ionization;
 Atmospheric Turbulence;
 Mathematical Models;
 MaxwellBoltzmann Density Function;
 Plasma Dynamics;
 Geophysics