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Applied Optics

Applied Optics


  • Vol. 13, Iss. 12 — Dec. 1, 1974
  • pp: 2850–2854

CO2 Laser Absorption Coefficients for Determining Ambient Levels of O3, NH3, and C2H4

R. R. Patty, G. M. Russwurm, W. A. McClenny, and D. R. Morgan  »View Author Affiliations

Applied Optics, Vol. 13, Issue 12, pp. 2850-2854 (1974)

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A carbon dioxide laser source was used to determine absorption coefficients for dilute absorber–air mixtures at wavelengths corresponding to several vibration–rotation lines in each branch of the 00°1–02°0 band at 9.4 μm and the 00°1–10°0 band at 10.4 μm. For all samples the total pressure was 1 atm and the temperature was 300 K; the concentrations ranged from 10 ppm (parts per million by volume) to 357 ppm for NH3 and C2H4, and from 10 ppm to 80 ppm for O3. The absorption coefficients are tabulated, and the use of selected laser lines in monitoring ambient concentrations is discussed.

© 1974 Optical Society of America

Original Manuscript: April 23, 1974
Published: December 1, 1974

R. R. Patty, G. M. Russwurm, W. A. McClenny, and D. R. Morgan, "CO2 Laser Absorption Coefficients for Determining Ambient Levels of O3, NH3, and C2H4," Appl. Opt. 13, 2850-2854 (1974)

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