INVESTIGATION OF THE PROPERTIES OF HOT PLASMA GASES AND MEASUREMENT OF GAS TEMPERATURES NEAR SOLID SURFACES.
Abstract
Studies were made of the methods of gas temperature measurements particularly of a plasma jet where the temperature can be derived from the gas density. One density measurement uses in principle the determination of the range of alpha-particles from a polonium source. Two other methods, one using the Doppler effect of sound and the other using the velocity of a pressure pulse were also discussed. The calorelectric effect was investigated experimentally and theoretically. Its mechanism was suggested supported by measurements of the electron temperature. A study of the ionization in flames led to the conclusion that the electron temperature in flames at atmospheric pressure can exceed markedly that of the neutral gas. As a result of it the large electron concentration in flames may well be caused by electron collisions rather than by a series of processes termed chemi-ionization. The theory of double probes was extended to high gas pressures where the motion of charges is controlled by collision processes such as mobility and diffusion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 28, 1965
- Accession Number
- AD0625043
Entities
People
- A. Von Engel