Electron distribution function in a nonuniform, magnetized, weakly photoionized gas application to a model ionosphere
Abstract
A plasma kinetic model is presented for the oneparticle electron distribution function in a dilute, nonuniform, magnetized, weakly photoionized gas. The model includes a phenomenological treatment of photoionization of the neutral species by an externally produced photon flux, electronion recombination, electronneutral particle attachment, elastic, excitation, deexcitation, and ionizing electronneutral particle collisions, and elastic electronelectron and electronion collisions. Using known methods, the approximate analytic formula for the steadystate electron distribution function is obtained at energies much larger than the electron thermal energy. For a model of the earth's ionospheric E and Fregions at low latitudes, numerical solutions for the steadystate electron distribution function are given and compared to a curvefitted distribution function of Maxwellian form. It is shown that the effective rate of production of electrons per unit volume is significantly enhanced due to ionizing electronneutral particle collisions. Results for the electron concentration and the electron temperature are also given.
 Publication:

Environmental Research Papers Air Force Cambridge Research Labs
 Pub Date:
 May 1975
 Bibcode:
 1975erp..rept.....J
 Keywords:

 Atmospheric Models;
 Gas Ionization;
 Ionospheric Electron Density;
 Photoionization;
 E Region;
 F Region;
 Maxwell Equation;
 Recombination Reactions;
 Geophysics