首页> 外文期刊>Applied optics >EVALUATION OF TWO DIFFERENT GAS TEMPERATURES AND THEIR VOLUMETRIC FRACTION FROM BROADBAND N-2 COHERENT ANTI-STOKES RAMAN SPECTROSCOPY SPECTRA
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EVALUATION OF TWO DIFFERENT GAS TEMPERATURES AND THEIR VOLUMETRIC FRACTION FROM BROADBAND N-2 COHERENT ANTI-STOKES RAMAN SPECTROSCOPY SPECTRA

机译:宽带N-2相干反斯托克斯拉曼光谱的两种气体温度及其体积分数的评价。

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摘要

Technical flames often contain regions of high temperature gradients at a length scale that is smaller than or comparable with the size of the probe volume used. In these situations the coherent anti-Stokes Raman spectroscopy (CARS) signal is composed of contributions of gases of different temperatures. Here a fitting routine is presented that allows the evaluation of the different temperatures that occur in the CARS spectra by splitting the temperature mixed spectra into contributions of two main temperatures. Additionally, the volumetric fraction of both gas components with those two different temperatures can be determined. The evaluation procedure has been tested by the use of measured temperature mixed CARS spectra that have been taken in two gas samples with different gas temperatures. [References: 14]
机译:技术火焰通常包含高温梯度区域,其长度尺度小于或等于所用探针体积的大小。在这些情况下,相干反斯托克斯拉曼光谱(CARS)信号由不同温度的气体组成。在这里,提出了一个拟合例程,该例程可以通过将温度混合光谱分成两个主要温度的贡献值来评估CARS光谱中出现的不同温度。另外,可以确定具有这两个不同温度的两种气体组分的体积分数。评估程序已经通过使用在两个具有不同气体温度的气体样品中获得的温度混合CARS光谱进行了测试。 [参考:14]

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