火炎中に生成される多環芳香族炭化水素のレーザ計測 : 第1報, 時間分解計測によるレーザ誘起蛍光と赤熱発光の分離

フォーマット:
論文(AKAGI収録)
責任表示:
佐藤, 桂司 ; 林田, 和宏 ; 天谷, 賢児 ; 新井, 雅隆
出版情報:
日本機械学会, 2004-04-25
著者名:
掲載情報:
日本機械学會論文集. B編
ISSN:
0387-5016  CiNii Articles  Webcat Plus  IRDB
巻:
70
通号:
691
開始ページ:
1051
終了ページ:
1057
バージョン:
publisher
概要:
In this paper, separation of laser-induced fluorescence (LIF) due to PAHs and incandescence (LII) due to soot by time-resolved measurement was demonstrated for the propane diffusion flame. Laser-induced fluorescence method for the measurement of polycyclic aromatic hydrocarbons (PAHs) in diffusion flame was developed. A KrF excimer laser was used for excite the PAHs. Strong laser-induced incandescence due to soot was appeared with fluorescence signal due to PAHs. In order to separate the signals into LII and the PAHs-LIF detected from diffusion flame, time-resolved measurement was carried out. A pico-second gate CCD camera with a image intensifier was used taking a time-resolved image. From the two different images, which were taken at different time-delay, PAHs-LIF and LII were obtained. Intensity distributions of PAHs-LIF and LII were measured on the flame axis. Overlap region of the LIF and LII was observed around the onset position of the yellow flame. In this region, LIF intensity decreased and LII intensity increased along the flow direction. It seemed that this region was transition region from the PAHs to soot and was attributed the presence of soot precursor. 続きを見る

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