Accession Number : ADA182422

Title :   Investigation of Sheath Phenomena in Electronegative Glow Discharges.

Descriptive Note : Student rept.,

Corporate Author : AIR COMMAND AND STAFF COLL MAXWELL AFB AL

Personal Author(s) : Duke,Gary L

PDF Url : ADA182422

Report Date : Apr 1987

Pagination or Media Count : 42

Abstract : Investigates sheath phenomena in electronegative glow discharges. Calculations have been performed for He/HC1, Ar/HC1, and Xe/HC1 mixtures to model the cathode fall region of a gas discharge. The electric field, Townsend ionization and attachment coefficients, as well as positive ion, negative ion, and electron densities were were calculated as a function of distance. Attachment was found to increase the voltage and length of the cathode fall. Efficient ionization of the electronegative gas, HC1, which has a low ionization threshold, resulted in an overall contraction of the cathode fall in He mixtures. Keywords: Helium; Hydrogen Chloride; Argon; Xenon; Glow Discharges.

Descriptors :   *CATHODES, *PLASMA SHEATHS, *GLOW DISCHARGES, COEFFICIENTS, EFFICIENCY, ELECTRIC FIELDS, CATIONS, ELECTRON DENSITY, GAS DISCHARGES, GASES, ANIONS, ARGON, ATTACHMENT, HELIUM, HYDROGEN CHLORIDE, IONIZATION, THRESHOLD EFFECTS, XENON, POTENTIAL ENERGY

Subject Categories : Electricity and Magnetism
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE