MEASUREMENT OF TEMPERATURE OF PLASMA IN MHD-GENERATORS AND IN COMBUSTION CHAMBERS BY THE METHOD OF RECORDING THE ABSOLUTE INTENSITIES OF SPECTRAL LINES,
Abstract
A discussion is given of the theory of measuring the temperature of plasmas in combustion chambers and MHD ducts by recording the absolute intensities (AI) of spectral lines with a large spontaneous emission coefficient (Aigi). The accuracy of the method and its suitability for measuring the temperature of plasmas in MHD ducts are analyzed. The paper describes the experimental set-up, which consists of a combustion chamber and an MHD duct, and presents a schematic diagram for temperature measurements by the AI method. The paper also describes how the accuracy of the method is checked by determining the normalized coefficient of emission of the recorded Na1 5890A and Na1 5896A line values. A schematic diagram is also given for measuring the surface temperature of electrodes in an MHD duct through the plasma by means of an optical pyrometer and using data obtained by recording the absolute line intensities and the absolute intensities of the continuum in the spectral region 6000-6500A. The author presents the results of plasma temperature measurements made by the absolute line intensity method and the results of electrode surface temperature measurements for different regimes of combustion chamber operation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 23, 1968
- Accession Number
- AD0685488
Entities
People
- S. Suckewer
Organizations
- National Air and Space Intelligence Center