Accession Number : ADA138100

Title :   Investigation of Sheath Phenomena in Electronegative Glow Discharges.

Descriptive Note : Doctoral thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Duke,G L

PDF Url : ADA138100

Report Date : Dec 1983

Pagination or Media Count : 230

Abstract : Two different methods of analyzing the cathode fall region of low pressure glow discharge were developed and applied to three different electronegative gas mixtures. One method was based on a self-consistent numerical solution to Poisson's equation, the current continuity equations for electrons and negative ions, and the current conservation equation. This method assumes the electrons are always in equilibrium with the electric field. The other method was based on a self-consistent numerical solution of the Boltzmann transport equation for electrons, Poisson's equations, and the current conservation equation. This method allows the electrons not be in equilibrium with the field. Comparing these two methods revealed that nonequilibrium prevails throughout the cathode fall region. The electronegative gas mixtures investigated were small concentrations (less than 10%) of hydrogen chloride in helium, argon, or xenon.

Descriptors :   *Glow discharges, *Gases, *Cathodes, Mixtures, Hydrogen chloride, Helium, Argon, Xenon, Low pressure, Electric fields, Ionization, Attachment, Coefficients, Electrons, Anions, Current density, Cations, Poisson equation, Boltzmann equation, Reaction kinetics, Equilibrium(General), Air Force research

Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE