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Sensitivity of Shock-Tube Chemiluminescence Measurements to the Optical Setup

机译：冲击管化学发光测量对光学装置的敏感性

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Chemiluminescence measurements have been shown to be a non-intrusive and cost effective method to study chemical emission intensities and ignition delay times in shock-tube experiments. Obtaining these measurements can lead to the development of chemical kinetics mechanisms that can predict characteristics of species as a function of temperature, pressure, and stoichiometry. To obtain a measurement of the light emitted from a reaction inside the shock tube, light has to be directed through the shock-tube optical ports, typically in the authors' laboratory through a slit and a narrow-bandpass UV filter, and onto a photomultiplier tube (PMT) detector which collects the signal and sends it to a high-speed data acquisition system. This setup is also enhanced by careful alignment of a concave, reflecting mirror that it is used to collect and focus the light onto the active area of the PMT to make efficient use of the light collected from within the test region of the shock tube.
机译：化学发光测量已被证明是一种非侵入性且经济高效的方法，可用于在冲击管实验中研究化学物质的发射强度和点火延迟时间。获得这些测量值可以导致化学动力学机制的发展，该机制可以根据温度，压力和化学计量来预测物种的特征。为了测量激波管内反应发出的光，通常必须将光通过激波管光学端口，通常是在作者的实验室中，通过狭缝和窄带紫外滤光片，然后入射到光电倍增管上。电子管（PMT）检测器，该检测器收集信号并将其发送到高速数据采集系统。通过仔细对准凹面反射镜也可以增强此设置，该凹面反射镜用于收集光并将其聚焦到PMT的有效区域上，以有效利用从震动管测试区域内收集的光。

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