Accession Number : AD0700307
Title : EXPERIMENTAL STUDY OF A HOLLOW-CATHODE ARGON ARC PLASMA.
Descriptive Note : Technical rept. Jul 66-Jun 68,
Corporate Author : AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO
Personal Author(s) : Holt,James F. ; Boyer,Ellsworth L.
Report Date : SEP 1969
Pagination or Media Count : 30
Abstract : A set of coaxial cathode tubes produced a plasma having the same characteristics as the plasma from a tubular hollow cathode. Measurements of the plasma characteristics by microwave interferometry, plasma sweeper, Langmuir probe, and measurements made with a new plasma tool--a plasma scanner--showed that the plasma is nearly completely ionized at 10 to the 13th power/cc ion density. The electron beam, originating in the cathode, was detected by means of the scanner. The electrons in the beam attain energies as high as two-thirds of the arc voltage drop. The ion temperature of 6.9 electron volts, which was deduced from plasma sweeper measurements and diffusion theory, could result from directed ion drift; the electron temperature of the plasma is 3 electron volts. (Author)
Descriptors : (*PLASMA GENERATORS, ELECTRIC ARCS), CATHODES, ELECTRON BEAMS, SCANNING, ARGON
Subject Categories : Plasma Physics and Magnetohydrodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE