RADIATION HEAT FLUX FROM HIGH PRESSURE ARCS
Abstract
An ablation type constrictor was developed in which an electric arc at very high pressure is sufficiently stable for spectrographic measurements. Radial temperature distributions were determined for 250 ampere arcs in Delrin, (COH2)n, plasma at 100 and 150 atmospheres. Voltage gradient is constant along the arc axis and as high as 500 volts/cm. Pressure gradient in the constrictor is negligible. These two results indicate strongly that in spite of the self- induced flow field, the ablation type arc is homogeneous along the column. Temperature measurement was based on non-optically thin Abel inversion of continuum intensity measurements useful to an optical depth of one or more, which related temperature to theoretically computed continuum emission. A previously developed arc radiation model was extended to include a few selected lines, and these contribute significantly to total radiation because they are very much broadened.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1968
- Accession Number
- AD0671530
Entities
People
- B. Damsky
- C. H. Marston
- G. Frind
Organizations
- General Electric