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Applied Optics

Applied Optics


  • Vol. 5, Iss. 2 — Feb. 1, 1966
  • pp: 201–209

Spectroscopic Temperature Profile Measurements in Inhomogeneous Hot Gases

Burton Krakow  »View Author Affiliations

Applied Optics, Vol. 5, Issue 2, pp. 201-209 (1966)

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Temperature distributions in inhomogeneous hot gases were determined from line-of-sight infrared spectral measurements. Radiance and transmittance of combustion products of flat flames were measured at each of several CO2-band frequencies near 4.3 μ. Measurements of isothermal-samples showed how the CO2 transmittance varied with temperature. Radiance measurements were made on samples with known nonisothermal temperature profiles. Radiance equations were so formulated that they could be solved for the temperature profile of the nonisothermal sample by an iterative procedure, using the transmittance and radiance data described above. Temperature profiles obtained by this procedure were in good agreement with the predetermined thermal structures of the specimens.

© 1966 Optical Society of America

Original Manuscript: August 10, 1965
Published: February 1, 1966

Burton Krakow, "Spectroscopic Temperature Profile Measurements in Inhomogeneous Hot Gases," Appl. Opt. 5, 201-209 (1966)

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  1. S. Silverman, J. Opt. Soc. Am. 39, 275 (1949). [CrossRef] [PubMed]
  2. R. H. Tourin, B. Krakow, Appl. Opt. 4, 237 (1965). [CrossRef]
  3. D. L. Phillips, J. Assoc. Computing Machinery 9, 84 (1962). [CrossRef]
  4. S. Twomey, J. Assoc. Computing Machinery 8, 97 (1963). [CrossRef]
  5. G. N. Plass, Appl. Opt. 4, 69 (1965). [CrossRef]
  6. B. Lewis, G. von Elbe, Combustion, Flames and Explosions of Gases (Academic, New York, 1961), p. 680.
  7. R. H. Tourin, in Temperature, Its Measurement and Control in Science and Industry, C. M. Herzfeld, ed. (Reinhold, New York, 1957), Vol. III, Part II, p. 459.

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