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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 5, Iss. 2 — Feb. 1, 1966
  • pp: 225–230

Spectroradiometric Pyrometry of Shock-Heated Gases by Infrared Emission and Absorption Measurements

Gunter J. Penzias, Stanley A. Dolin, and Herman A. Kruegle  »View Author Affiliations


Applied Optics, Vol. 5, Issue 2, pp. 225-230 (1966)
http://dx.doi.org/10.1364/AO.5.000225


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Abstract

A spectroradiometric pyrometer was developed to measure temperatures of shock-heated gases with time resolution of about 10 μsec. Gas temperatures in shock-heated CO2–N2 mixtures and in self-sustaining detonations were determined by simultaneously measuring infrared spectral radiance and absorptance at selected wavelengths in CO2 and H2O band spectra. By Kirchhoff’s law, the ratio (radiance/absorptance) equals the Planck blackbody radiance, from which the temperature is easily found. The measured temperatures agreed with values calculated from the measured shock velocities.

© 1966 Optical Society of America

History
Original Manuscript: October 5, 1965
Published: February 1, 1966

Citation
Gunter J. Penzias, Stanley A. Dolin, and Herman A. Kruegle, "Spectroradiometric Pyrometry of Shock-Heated Gases by Infrared Emission and Absorption Measurements," Appl. Opt. 5, 225-230 (1966)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-5-2-225

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