Carbon dioxide UV laser-induced fluorescence in high-pressure flames

被引：21
|
作者：
Bessler, WG
Schulz, C
Lee, T
Jeffries, JB
Hanson, RK
机构：
[1] Heidelberg Univ, Inst Chem Phys, D-69120 Heidelberg, Germany
[2] Stanford Univ, High Temp Gasdynam Lab, Dept Engn Mech, Stanford, CA 94305 USA
来源：
CHEMICAL PHYSICS LETTERS | 2003年 / 375卷 / 3-4期
关键词：
D O I：
10.1016/S0009-2614(03)00858-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Laser-induced fluorescence (LIF) of carbon dioxide is investigated with excitation between 215 and 255 nm with spectrally resolved detection in 5-40 bar premixed CH4/O-2/Ar and CH4/air flat-flames at fuel/air ratios between 0.8 and 1.9. The LIF signal consists of a broad (200-450 nm) continuum with a faint superimposed structure, and this signal is absent in similar H-2/O-2/Ar flames. There is strong evidence this signal arises from CO2, as the signal variations with excitation wavelength, equivalence ratio and flame temperature all correlate with CO2 absorption cross-sections. The signal is linear with pressure and laser fluence within the investigated ranges. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：344 / 349
页数：6
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