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首页> 外文期刊>Applied optics >In situ combustion measurements of CO_(2) by use of a distributed-feedback diode-laser sensor near 2.0 μm
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In situ combustion measurements of CO_(2) by use of a distributed-feedback diode-laser sensor near 2.0 μm

机译：通过使用接近2.0μm的分布式反馈二极管激光传感器对CO_（2）进行原位燃烧测量

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摘要

High-resolution absorption measurements of CO_(2) were made in a heated static cell and in the combustion region above a flat-flame burner for the development of an in situ CO_(2) combustion diagnostic based on a distributed-feedback diode laser operating near 2.0 μm. Calculated absorption spectra of high-temperature H_(2)O and CO_(2) were used to find candidate transitions for CO_(2) detection, and the R(50) transition at 1.997 μm (the v_(1)+2v_(2)+v_(3) band) was selected on the basis of its line strength and its isolation from interfering high-temperature water absorption. Measurements of spectroscopic parameters such as the line strength, the self-broadening coefficient, and the line position were made for the R(50) transition, and an improved value for the line strength is reported. The combustion-product populations of CO_(2) in the combustion region above a flat-flame burner were determined in situ to verify the measured spectroscopic parameters and to demonstrate the feasibility of the diode-laser sensor.
机译：CO_（2）的高分辨率吸收测量是在加热的静态电池中以及在平焰燃烧器上方的燃烧区域中进行的，用于开发基于分布式反馈二极管激光操作的原位CO_（2）燃烧诊断接近2.0微米计算出的高温H_（2）O和CO_（2）的吸收光谱用于寻找CO_（2）检测的候选跃迁以及1.997μm处的R（50）跃迁（v_（1）+ 2v_（2 ）+ v_（3）谱带是根据其线强度以及与干扰高温吸水的隔离性而选择的。针对R（50）跃迁进行了光谱参数（例如线强度，自增宽系数和线位置）的测量，并报告了线强度的改进值。在平焰燃烧器上方的燃烧区域中，就地确定了CO_（2）的燃烧产物种群，以验证测得的光谱参数并证明二极管激光传感器的可行性。

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