Dual-pump CARS measurements of N2, H2 and CO in a partially premixed flame
Dual-pump CARS measurements of N2, H2 and CO in a partially premixed flame
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双泵 CARS 测量部分预混火焰中的 N2、H2 和 CO
DOI：
10.1002/jrs.1700
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发表时间：
2007
影响因子：
2.5
通讯作者：
A. Leipertz
中科院分区：
文献类型：
--
作者：
M. Weikl;T. Seeger;Ruth Hierold;A. Leipertz
建立了一种同时检测氮气、一氧化碳和氢气的三激光、双抽运相干反斯托克斯拉曼散射(CARS)技术。氢Q支线被用来测定相对氢浓度，与使用S分支跃迁的方法相比，它提供了更宽的探测范围。因此，可以在从室内空气到火焰的整个温度范围内测量氢浓度。测量是在加热的电池和部分预混的丙烷/空气火焰中进行的。池中的测量结果与理论光谱计算符合得很好。通过火焰中的测量，可以确定作为中间物种产生的氢和一氧化碳的相对浓度。此外，该方法还可以观察到氢的扩散效应。版权所有©2007 John Wiley&Sons，Ltd.
A three-laser, dual-pump coherent anti-Stokes Raman scattering (CARS) technique for the simultaneous detection of nitrogen, carbon monoxide and hydrogen has been developed and tested. Hydrogen Q-branch lines were used for the determination of relative hydrogen concentrations, which offers a much wider range of detectivity in contrast to approaches in which S-branch transitions are used. Consequently, hydrogen concentrations could be measured over a whole range of temperatures, from room air to a flame. Measurements were taken in a heated cell and in a partially premixed propane/air flame. Measurements in the cell were in good agreement with theoretical spectral calculations. From measurements in the flame, the relative concentrations of hydrogen and carbon monoxide, which were generated as intermediate species, could be determined. Furthermore, diffusion effects of hydrogen could be observed with the presented approach. Copyright © 2007 John Wiley & Sons, Ltd.