Diagnostic Methods and Instability Suppression Techniques for a Mirror Geometry Plasma with Radial Electric Fields.
Abstract
Theoretical and experimental work on a rotating magnetoplasma in 4:1 mirror geometry is described. The properties of seven plasma sources are summarized. The main plasma source, consisting of a helical Lisitano coil and spiral thermionic filament to create a parabolic potential profile, produced a plasma having the following parameters at the center point: density 1E17 to 5E18/cu meter, electron temperature 1.5E4 to 3E4 deg. K, ion temperature 3E3 to 2E4 deg. K, magnetic induction 0.02 to 0.04T, radial electric field up to 100 V.m in a neutral argon pressure of 1.8 mTorr. A rapid method for determining time-resolved plasma parameters using Langmuir probes, boxcar integrator, memory display unit and minicomputer is described. A theory of collisional drift waves for a partially ionized magnetoplasma with ion temperature not equal to electron temperature is described. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1973
- Accession Number
- AD0777575
Entities
People
- John S. Martin
- Merrill L. Andrews
Organizations
- Wright State University