物理学报Issue(22)：224206-1-224206-7,7.DOI:10.7498/aps.62.224206
2.0µm处CO2高温谱线参数测量研究
Study of CO2 spectroscopic parameters at high temperature near 2.0 µm
摘要
Abstract
Reliable spectroscopic parameters of probed species at high temperature, such as line strengths, self-broadening coefficients, air-broadening coefficients, and temperature exponents, are important in absorption spectroscopy for accurately studying species prop-erties, such as temperature, concentration, speed, and their corresponding field distributions. However, parameters from widely used database such as HITEMP are mainly theoretical calculation results, and there exist considerable errors compared with the results in actual situations. In order to validate spectroscopic parameters of CO2 lines used in combustion diagnosis, CO2 spectrum is recorded as a function of temperature in a range between 700 K and 1300 K in experiment using a distributed feed-back diode laser. Parameters of each line are deduced, such as line strengths, self-broadening coefficients and temperature exponents. The relative errors between measured and calculated line-strengths are less than 11% at 5006.978 cm−1 and 5007.7874 cm−1 . The measured self-broadening coefficients at different temperatures and temperature exponents are conducive to the detection of CO2 concentration in combustion diagnostics.关键词
可调谐半导体激光吸收光谱/高温光谱/自展宽系数/温度系数Key words
tunable diode laser absorption spectroscopy/high temperature spectrum/self-broadening coefficient/temperature exponent引用本文复制引用
陈玖英,何俊峰,戴云海,阚瑞峰,刘建国,何亚柏,王辽,冮强,许振宇,姚路,袁松,阮俊..2.0µm处CO2高温谱线参数测量研究[J].物理学报,2013,(22):224206-1-224206-7,7.基金项目
国家自然科学基金(批准号:61108034)、国家自然科学基金青年科学基金(批准号:61205151)和中国科学院战略性先导科技专项(批准号:XDA05040102)资助的课题.*Project supported by the National Natural Science Foundation of China (Grant No.61108034), the Young Scientists Fund of the National Natural Science Foundation of China (Grant No.61205151), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA05040102) （批准号:61108034）
