Measurement of absorption line wing structure by wavelength modulation spectroscopy

被引:8
作者
Bullock, AM [1 ]
Dharamsi, AN [1 ]
Chu, WP [1 ]
Poole, LR [1 ]
机构
[1] NASA,LANGLEY RES CTR,AEROSOL RES BRANCH,HAMPTON,VA 23681
关键词
D O I
10.1063/1.118528
中图分类号
O59 [应用物理学];
学科分类号
摘要
The application of wavelength modulation absorption spectroscopy in the characterization of Lineshape functions of molecular spectra is discussed theoretically, and experimental results for the weak spin-forbidden, magnetic dipole-driven transitions of the oxygen A band are provided. Factors affecting the accuracy of the method are discussed, and it is shown that the technique allows one to accurately probe absorption Lineshape functions by using a simple, cost-effective apparatus. The advantages of using detection harmonics greater than the commonly used second are discussed, including an investigation of wing structures of absorption lines and the measurement of collision cross sections. (C) 1997 American Institute of Physics.
引用
收藏
页码:1195 / 1197
页数:3
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