大气与环境光学学报, 2009, 4 (1): 38, 网络出版: 2010-05-26
高分辨吸收光谱测量
Measurement of Ethane Spectrum with High Resolution near 1.65 m Based on TDLAS
可调谐半导体激光光谱技术 Herriot池 乙烷 Voigt 拟合 tunable diode laser absorption spectroscopy Herriot cell ethane Voigt fitting
摘要
基于可调谐半导体激光光谱(TDLAS)技术,结合实验室自制程长可达 50 m 的Herriot池,使用波长计对乙烷吸收谱线进行了准确定标, 并根据记录的光谱数 据,精确测量了6039[EQUATION]6054 cm[EQUATION]波段内71条乙烷分子的谱线(中心位置及谱线强度), 最小可探测谱线吸收强度为10[EQUATION] cm[EQUATION]/(molecule[EQUATION]cm[EQUATION]),对结果及误差进行了 详细分析,为进一步研究天然气提供了重要参考。
Abstract
Based on tunable diode laser absorption spectroscopy (TDLAS) technology, combining a Herriot cell with optical length of 50 m, using a wave-length-meter to scale the positions of the lines, the positions and intensities of 71 ethane lines between 6039 cm[EQUATION] and 6054 cm[EQUATION] are precisely measured, and the minimum detection absorption intensity reaches 10[EQUATION] cm[EQUATION]/(molecule[EQUATION]cm[EQUATION]). Results and errors are analyzed in detail, which is very useful to carry on research of natural gas in further.
王贵师, 蔡廷栋, 汪磊, 张为俊, 高晓明. 高分辨吸收光谱测量[J]. 大气与环境光学学报, 2009, 4(1): 38. WANG Gui-shi, CAI Ting-dong, WANG Lei, ZHANG Wei-jun, GAO Xiao-ming. Measurement of Ethane Spectrum with High Resolution near 1.65 m Based on TDLAS[J]. Journal of Atmospheric and Environmental Optics, 2009, 4(1): 38.
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