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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 4 — Feb. 15, 1980
  • pp: 517–520

Vibrational energy transfer in laser-excited A2+ OH as a flame thermometer

David R. Crosley and Gregory P. Smith  »View Author Affiliations


Applied Optics, Vol. 19, Issue 4, pp. 517-520 (1980)
http://dx.doi.org/10.1364/AO.19.000517


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Abstract

OH molecules in the burnt gases of a methane–air flame are excited to individual rotational levels of the v′ = 0 level of the. A2+ state using a tunable pulsed laser. Some of the laser-excited molecules undergo upward collisional energy transfer to v′ = 1 before radiating. A measurement of the ratio of the populations in these two vibrational levels, together with an estimate of the relative rates of vibrational transfer and quenching and the invocation of detailed balancing, furnishes the temperature of the flame. The method should be suitable for the single-pulse simultaneous measurement of the temperature and the concentration of OH, a reactive intermediate species.

© 1980 Optical Society of America

History
Original Manuscript: October 9, 1979
Published: February 15, 1980

Citation
David R. Crosley and Gregory P. Smith, "Vibrational energy transfer in laser-excited A2+ OH as a flame thermometer," Appl. Opt. 19, 517-520 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-4-517


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References

  1. D. R. Crosley, Ed., Laser Probes for Combustion Chemistry, ACS Symposium Series (American Chemical Society, Washington, D.C., 1980), to be published. [CrossRef]
  2. J. W. Daily, in Ref. 1; C. Chan, Ph.D. Thesis, Dept. of Mechanical Engineering, U. California, Berkeley (1979).
  3. R. K. Lengel, D. R. Crosley, J. Chem. Phys. 67, 2085 (1977). [CrossRef]
  4. G. H. Dieke, H. M. Crosswhite, J. Quant. Spectrosc. Radiat. Transfer 2, 97 (1962). [CrossRef]
  5. I. L. Chidsey, D. R. Crosley, J. Quant. Spectrosc. Radiat. Transfer23, in press (1980). [CrossRef]
  6. G. P. Smith, D. R. Crosley, L. W. Davis, Eastern Section Combustion Institute Meeting, Atlanta, November 1979;G. P. Smith, D. R. Crosley, Appl Opt., to be published.
  7. R. K. Lengel, D. R. Crosley, Chem. Phys. Lett. 32, 261 (1975); J. Chem. Phys. 68, 5309 (1978). [CrossRef]
  8. K. R. German, J. Chem. Phys. 64, 4065 (1976). [CrossRef]
  9. H. P. Hoomayers, C. T. J. Alkemade, J. Quant. Spectrosc. Radiat. Transfer 7, 495 (1967). [CrossRef]
  10. M. J. Cottereau, D. Stepowski in Ref. 1.

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