Simultaneous Laser-Induced Fluorescence Imaging of Unburnt and Reacting Areas in Combustion Fields Using a KrF Excimer Laser |
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Authors: | Masayuki Tamura Teruhiro Sakurai Hideo Tai |
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Affiliation: | (1) Fundamental Technology Research Laboratory, Tokyo Gas Co., Ltd., 1-16-25, Shibaura, Minato-ku, Tokyo 105-0023, Japan;(2) Energy Technology Research Institute, Tokyo Gas Co., Ltd., 1-16-25, Shibaura, Minato-ku, Tokyo 105-0023, Japan |
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Abstract: | Simultaneous two-dimensional imaging of an unburnt area and a reacting area was performed using laser-induced fluorescence. Acetone was added to fuel as a tracer, and OH radical was used as a marker of the reacting area. A narrow band tunable KrF excimer laser (248 nm) was employed to excite acetone and OH simultaneously. Two intensified CCD cameras with different wavelength filters were used to detect these two kinds of species respectively. Detecting 294-314 nm (A-X (3, 2), etc.) for OH and 335-410 nm for acetone, we obtained images of each species without interference of a signal from the other. The method was also successfully applied to flames in a pressurized combustion chamber under the pressure of 0.5 MPa. |
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Keywords: | laser-induced fluorescence LIF laser-induced predissociation fluorescence visualization combustion fuel acetone OH excimer laser |
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