ENERGY TRANSFER AND ELECTRON CONDUCTION IN THE FLUID TRANSPORTATION ARC.
Abstract
The energy relaxation and electrical conductivity of an electron gas in an argon arc discharge at 1 atm has been examined theoretically and observed quantitatively in an experimental arrangement. The plasma column utilized for study is the type generated in a fluid transpiration arc equipment in which the argon working fluid is injected through a porous graphite anode. The rate of forced convection is such as to insure significant electron-heavy particle nonequiligrium in the sample volume of interest. Accordingly, the electrical conductivity and the two-temperature volume rates of energy transfer have been obtained. The diagnostic techniques include Hall-effect magnetic field probe for current density, floating electrostatic probe for electrical field, spherical thermocouple heat transfer probe for heavy particle temperature and continuum spectrum intensity measurement for electron density and temperature. High-speed motion pictures provide a qualitative study of the plasma volume as well as its reaction to a material probe. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 1967
- Accession Number
- AD0653196
Entities
People
- P. S. Tschang
Organizations
- Columbia University