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利用光学多通道分析仪(OMA)对酒精和煤油在大气中燃烧时的火焰发射光谱进行了分析.实验发现上述火焰发射光谱在275600 nm波段范围内存在多支辐射强度很大的带状分子光谱,其中以OH自由基A2+X2r(300330 nm),CH自由基A2X2(410440 nm)和C2自由基A3gX3u(500520 nm)电子带系的发射光谱最为强烈.实验中采用高分辨率光栅对OH自由基A2+X2r和CH自由基A2X2电子带系发射光谱的精细结构进行了分析.与此同时,本文基于分子光谱理论计算了不同转动温度和振动温度条件下OH自由基A2+X2r和CH自由基A2X2电子带系发射光谱的强度分布,同时通过理论计算光谱和实验光谱进行比较确定了酒精燃烧火焰的转动温度和振动温度.This study addresses emission spectra of Air-ethanol and Air-kerosene flames by using optical multichannel analysis system (OMA). Experimental results show that there are several bands of molecular spectrum in a range from 275 to 600nm. Among them, the OH A2+X2r(300330 nm), the CH A2X2(410440 nm), and C2 A3gX3u (500 520 nm) emissions have the strongest intensity. In turn, the fine structures of OH (A2+X2r) and CH (A2X2) emission are studied by using a high resolution grating in experiment, and the distributions of spectra intensity are calculated at different rotational and vibrational temperatures based on the molecular spectroscopy. Moreover, by comparing the simulated spectra with the experimental spectra of OH (A2+X2r) and CH (A2X2) emissions, the rotational and the vibrational temperatures of Air-ethanol flame are determined in this paper.
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Keywords:
- flame emission spectroscopy /
- line intensity /
- rotational temperature /
- vibrational temperature
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-
[1] Zhang P, Cheng X L 1998 Journal of Solid Rocket Technology 21 66 (in Chinese) [张 平、程雪玲 1998 固体火箭技术 21 66]
[2] [3] Hu Z Y, Liu J R, Guan X W, Zhang Z R, Huang M S, Liu J S, Yuan X, Ye X S 2002 High Power Laser and Particle Beams 14 702 (in Chinese) [胡志云、刘晶儒、关小伟、张振荣、黄梅生、刘建胜、袁 孝、叶锡生 2002 强激光与粒子束 14 702]
[4] [5] Anderson M G, Mcamis R W, Brasier C W 1996 AIAA paper 2613 1
[6] Bryant R A, Ratner A, Driscoll J F 1999 AIAA paper 0774 1
[7] [8] Jeong E, Jeung I S, Byrne S O, Houwing A F 2008 J. Propul Power. 24 1258
[9] [10] Yang S R, Zhao J R, Sung C J 1998 AIAA paper 0727 1
[11] [12] Konstantin A V, Valery V S, Oleg M S, Victor I F, Vladimir A S, Vladimir V I, Walter C, Michael O 2001 Aerosp Sci Technol. 5 347
[13] [14] [15] Griffiths A D, Houwing A F P 2005 Appl. Opt. 44 6653
[16] [17] Rieker G B, Jeffries J B, Hanson R K, Gruber M R, Carter C D 2009 Proc. Combust Inst. 32 831
[18] [19] Boyarshinov B F, Fedorov S Y 2003 Combust Explo Shock 39 243
[20] [21] Boyarshinov B F, Fedorov S Y 2004 Combust Explo Shock 40 511
[22] Kawahara N, Tomita E, Takemoto S, Ikeda Y 2009 Spectrochimica Acta B 64 1085
[23] [24] Laux C O, Kruger C H, Zare R N 2003 Plasma Sources Sci. T 12 125
[25] [26] Laux C O, Gessman R J, Kruger C H, Roux F, Michaud F, Davis S P 2001 J. Quant Spectrosc RA 68 473
[27] [28] Chun F S, Tracy M, Fang Y Y 2003 AIAA paper 3750 1
[29] [30] James S, Serguei Z U. S. Patent 6914246b2
[31] [32] [33] Yang Q S, Yu X L, Jiang N B, Zhu N Y, Lin Z B 2001 Experiments and Measurements in Fluid Mechanics 14 57(in Chinese) [杨乾锁、余西龙、姜乃波、竺乃宜、林贞彬 2001 流体力学实验与测量 14 57]
[34] Liu D B, Yang D, Jiang R G, Li Y, Wang J D 2002 Spectrosc Spect Anal. 23 670 (in Chinese) [刘大斌、杨 栋、蒋荣光、李 燕、王俊德 2002 光谱学与光谱分析 23 670]
[35] [36] Liu L Y, Zhang J L, Ma T C, Deng X L 2002 Spectrosc Spect Anal. 22 1013 (in Chinese) [刘莉莹、张家良、马腾才、邓新绿 2002 光谱学与光谱分析 22 1013]
[37] [38] Tu X, Lu S Y, Yan J H, Ma Z Y, Pan X C, Cen K F 2002 Spectrosc Spect Anal. 22 1013 (in Chinese) [屠 昕、陆胜勇、严建华、马增益、潘新潮、岑可法 2006 光谱学与光谱分析 26 1785]
[39] [40] Dong L F, Li Y H, Chen W J, Li X C 2007 Spectrosc Spect Anal. 27 2406 (in Chinese) [董丽芳、李永辉、陈文军、李雪辰 2007 光谱学与光谱分析 27 2406]
[41] [42] [43] Peng Z M, Ding Y J, Yang Q S, Jiang Z L 2011 Acta Phys Sin. 60 053302 (in Chinese) [彭志敏、丁艳军、杨乾锁、姜宗林 2011 60 053302]
[44] [45] Jorge L, David R C 1998 J. Chem. Phys. 109 439
[46] [47] Jorge L, David R C 1996 SRI Report. No MP 96-001
[48] Jorge L, David R C 1996 J. Chem. Phys. 104 2146
[49] [50] [51] Peng Z M 2010 Ph. D. Thesis (Beijing: Institute of Mechanics, Chinese Academy of Sciences) (in Chinese) [彭志敏 2010 博士学位论文(中国科学院力学研究所)]
[52] [53] Charles D I 2000 J. Phys. D: Appl. Phys. 33 1697
[54] [55] [56] Carla S T M, Leila R dos Santos, Maria E S, Luiz G B 2009 Quim Nova. 32 2073
[57] [58] Dermeval C J, Luiz G B, Celso A B, Alberto M dos Santos 2010 J. Braz Chem Soc. 00 1
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