QEPAS methane sensor performance for humidified gases

被引：86

作者：

Kosterev, A. A. ^{[1
]}

Bakhirkin, Y. A. ^{[1
]}

Tittel, F. K. ^{[1
]}

McWhorter, S. ^{[2
]}

Ashcraft, B. ^{[2
]}

机构：

[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA

[2] Savannah River Natl Lab, Hydrogen Technol Res Lab, Aiken, SC 29808 USA

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2008年 / 92卷 / 01期

关键词：

D O I：

10.1007/s00340-008-3056-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A trace gas sensor based on quartz enhanced photoacoustic spectroscopy (QEPAS) was evaluated using humidified nitrogen samples and ambient air. Relaxation processes following vibrational excitation of 2 nu(3) state of CH4 were investigated. Sensor performance at different gas pressures could be predicted based on a developed kinetic model. The experimentally determined normalized detection sensitivity for CH4 in humid gas is 1.0x10(8) cm(-1) W/Hz(1/2).

引用

页码：103 / 109

页数：7

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