SPECTRAL RADIANCE AND EMISSIVITY OF PLASMA AND TEMPERATURE DETERMINATION
Abstract
A method used to determine the temperature of a flame is to measure its spectral radiance and spectral emissivity. The ratio of these two measured quantities provides a point on the blackbody curve, if the flame is effectively in equilibrium. Sufficient measurements are taken throughout a wavelength region to trace out an experimentally determined blackbody curve. This curve is compared with a series of curves that have been plotted by using different temperatures in Planck's radiation law. The temperature used to obtain the plotted curve that best coincides with the experimentally determined blackbody curve is designated as the flame temperature. The technique appears to be feasible for continuous plasma sources with temperatures up to about 15,000 K. The method provides a temperature determination procedure utilizing many different radiative processes. Hence, the temperature determined by this method reflects more clearly the energy content and energy distribution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 10, 1962
- Accession Number
- AD0273590
Entities
People
- Allen E. Fuhs
Organizations
- The Aerospace Corporation