Title :
A Collimated Total Radiation Probe for Arcjet Measurements
Author :
Grey, Jerry ; Sherman, Martin P. ; Jacobs, Paul F.
Author_Institution :
Princeton University, Princeton University
Abstract :
The total energy radiation of an argon arcjet was measured by a simple collimated thermopile. Radiation from the luminous jet was found to vary as T7.2 when the peak (centerline) temperature at the arcjet exit plane was 12,600°K. Total radiated energy from the arcjet, including the downstream-directed component from the cathode face, was found to agree quite well with theoretical estimates given in the present paper. The use of a purified helium atmosphere and lithium fluoride optical components permitted achievement of transmissivity down to 1060 angstroms on all measurements.
Keywords :
Argon; Atmosphere; Cathodes; Collimators; Energy measurement; Estimation theory; Helium; Lithium compounds; Probes; Temperature;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1964.4323343