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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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References

  1. R. H. Tourin, in Temperature, Its Measurement and Control in Science and Industry, C. M. Herzfeld, ed. (Reinhold, New York, 1962), Vol. III, Part 2, Chap. 43.
  2. H. J. Babrov, J. Opt. Soc. Am. 51, 171 (1961). [CrossRef]
  3. A. G. Gaydon, I. R. Hurle, The Shock Tube in High-Temperature Chemical Physics (Reinhold, New York, 1962), pp. 37–39 and p. 113.
  4. H. J. Babrov, Ph.D. Thesis, University of Pittsburgh (1959); also available as AFOSR TR 59-207 (U.S. Air Force Office of Scientific Research, Washington, D. C., 1959).
  5. H. W. Emmons, ed., Fundamentals of Gas Dynamics, Vol. III of High Speed Aerodynamics and Jet Propulsion (Princeton Univ. Press, Princeton, N.J., 1958), pp. 574–686.
  6. R. H. Tourin, B. Krakow, Appl. Opt. 4, 237 (1965). [CrossRef]

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