Uncertainty analysis of OH concentration measurement by optical cavity ring down spectroscopy

被引：0

作者：

Tu X. ^{[1
]}

Chen S. ^{[1
]}

Su T. ^{[1
]}

Mu J. ^{[1
]}

Yang F. ^{[1
]}

机构：

[1] Facility Design & Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2017年 / 46卷 / 02期

关键词：

Concentration measurement; CRDS; OH; Plat flame; Uncertainty analysis;

D O I：

10.3788/IRLA201746.0239002

中图分类号：

学科分类号：

摘要：

Cavity ring down spectroscopy (CRDS) is an absorption spectroscopy technique with high sensitivity, which is a very important quantitative concentration measurement approach in combustion spectral diagnosis. The principle analysis of CRDS was presented to apply to absolute concentrations of intermediate species in flames, and then an experimental setup of pulsed CRDS was established based on this principle. The absolute OH concentration was measured by using absorption on the P1 (2) rotational line in the A2Ʃ+-X2 Π (0, 0) band of OH on a plat flame at atmospheric pressure. Influence of several major factors on the measurement uncertainty was analyzed, such as laser line shape and linewidth, frequency stability of the laser, flame temperature, and cavity parameters. This uncertainty analysis provides several guidelines to improve the measurement accuracy of CRDS. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

共 19 条

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