Strategies for Laser-Induced Fluorescence Detection of Nitric Oxide in High-Pressure Flames. II. A–X(0, 1) Excitation
Applied Optics, Vol. 42, Issue 12, pp. 2031-2042 (2003)
http://dx.doi.org/10.1364/AO.42.002031
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Abstract
A–X(0, 1) excitation is a promising new approach for NO laser-induced fluorescence (LIF) diagnostics at elevated pressures and temperatures. We present what to our knowledge are the first detailed spectroscopic investigations within this excitation band using wavelength-resolved LIF measurements in premixed methane/air flames at pressures between 1 and 60 bar and a range of fuel/air ratios. Interference from O2 LIF is a significant problem in lean flames for NO LIF measurements, and pressure broadening and quenching lead to increased interference with increased pressure. Three different excitation schemes are identified that maximize NO/O2 LIF signal ratios, thereby minimizing the O2 interference. The NO LIF signal strength, interference by hot molecular oxygen, and temperature dependence of the three schemes are investigated.
© 2003 Optical Society of America
[Optical Society of America ]
OCIS Codes
(280.1740) Remote sensing and sensors : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced
Citation
Wolfgang G. Bessler, Christof Schulz, Tonghun Lee, Jay B. Jeffries, and Ronald K. Hanson, "Strategies for Laser-Induced Fluorescence Detection of Nitric Oxide in High-Pressure Flames. II. A–X(0, 1) Excitation," Appl. Opt. 42, 2031-2042 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-12-2031
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