
Accession Number : ADA138100
Title : Investigation of Sheath Phenomena in Electronegative Glow Discharges.
Descriptive Note : Doctoral thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHTPATTERSON 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 selfconsistent 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 selfconsistent 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