TRANSIENT PROBE DIAGNOSTICS OF DENSE PLASMAS.
Abstract
This report describes the accomplishments of a two-year project on the development of transient probes for the diagnostics of moderately dense (0.1 to 10 atm) plasmas. The types of probes investigated include a Hall magnetic probe, a thermocouple probe, a fiber optics probe, and a dynamic pressure (Pitot tube) probe. In each case the sensing element or probe tip is driven through the hot plasma at high speeds (e.g., 1 to 7.5 m/sec) and immersion times are restricted to the millisecond range. The sensing elements are miniaturized so as to respond to plasma conditions as localized as possible, and to reduce perturbations of the plasma itself. Fast response instrumentation is utilized to provide a direct measure of the variation of plasma parameters along the line of the probe traverse. Short immersion times plus some insulation are relied upon to prevent thermal damage to the probes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1969
- Accession Number
- AD0695052
Entities
People
- C. G. Stojanoff
- C. Sheer
- P. S. Tschang
Organizations
- Columbia University