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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 9 — Mar. 20, 1999
  • pp: 1434–1443

Quantification of NO AX(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames

Christof Schulz, Volker Sick, Ulrich E. Meier, Johannes Heinze, and Winfried Stricker  »View Author Affiliations


Applied Optics, Vol. 38, Issue 9, pp. 1434-1443 (1999)
http://dx.doi.org/10.1364/AO.38.001434


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Abstract

Laser-induced-fluorescence techniques have been used successfully for quantitative two-dimensional measurements of nitric oxide. NO AX(0, 2) excitation at 248 nm recently found applications in internal-combustion engines. We assess the collisional processes that influence quantification of signal intensities in terms of saturation, rotational energy transfer, and line broadening, using laminar high-pressure methane/air and n-heptane/air flames at pressures as high as 80 bars (8 × 106 Pa). A calibration method that is applicable in technical combustion systems based on addition of NO to the burning flame is investigated for various air/fuel ratios and pressures and yields information about the influence of NO reburn processes.

© 1999 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced

History
Original Manuscript: July 6, 1998
Revised Manuscript: December 22, 1998
Published: March 20, 1999

Citation
Christof Schulz, Volker Sick, Ulrich E. Meier, Johannes Heinze, and Winfried Stricker, "Quantification of NO A–X(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames," Appl. Opt. 38, 1434-1443 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-9-1434

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