Collisional Effects on Electrostatic Waves in Isotropic Plasmas.
Abstract
The effect of electron neutral collisions on electrostatic wave propagation in an isotropic Lorentz plasma was investigated. The linearized Boltzmann equation was solved assuming the neutrals are stationary and infinitely heavy. Electronneutral scattering is described by an arbitrary scattering cross section. For a small sinusoidal perturbation of the plasma, the resultant electron velocity distribution is the sum of an arbitrary isotropic distribution plus an incremental function represented by an infinite continued fraction containing all the Allis transport collision frequencies. From this distribution, a dispersion relation for electrostatic wave propagation was derived. Solutions of this relation are found for three representative collision processes (constant mean free path, constant mean free time, and Ramsauer scattering) for both Maxwellian and nonMaxwellian equilibrium electron velocity distributions.
 Publication:

Ph.D. Thesis
 Pub Date:
 1979
 Bibcode:
 1979PhDT........32W
 Keywords:

 Physics: Fluid and Plasma;
 Collisional Plasmas;
 Electrostatic Waves;
 Isotropic Media;
 Particle Collisions;
 Boltzmann Transport Equation;
 Electron Scattering;
 Neutral Particles;
 Plasma Frequencies;
 Wave Propagation;
 Plasma Physics