One-dimensional imaging of H2 densities and of temperatures via rotational Raman scattering of narrow-band, 248 nm, laser light
One-dimensional imaging of H2 densities and of temperatures via rotational Raman scattering of narrow-band, 248 nm, laser light
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通过窄带 248 nm 激光的旋转拉曼散射对氢气密度和温度进行一维成像
DOI：
10.1002/(sici)1097-4555(199708)28:8
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发表时间：
1997
影响因子：
2.5
通讯作者：
G. Reck
中科院分区：
文献类型：
--
作者：
Yongwei Gu;E. Rothe;G. Reck
它表明，众所周知的旋转拉曼光谱的氢气可以用来找到相对密度的氢气和气体温度作为位置的函数。来自可调谐准分子激光器的线形光束与H2-空气火焰相交。散射光是用成像光谱仪采集的。这产生斯托克斯和反斯托克斯光谱。通过调整激光束的偏振，在不使用滤光片的情况下充分降低了干涉Rayleigh强度。温度测量可以从低于室温到约1200 K。该方法也适用于温度>1200 K，但使用振动拉曼光谱可能更好。还示出了同时获得的来自旋转拉曼、振动拉曼和激光诱导荧光的空间分辨光谱的图像。这样的组合信息可以用于在一定程度上详细诊断气态系统。© 1997 John Wiley & Sons，Ltd.
It is demonstrated that the well known rotational Raman spectrum of H2 can be used to find the relative densities of hydrogen and the gas temperature as a function of position. A line-shaped beam from a tunable excimer laser intersects H2–air flames. Scattered light is acquired with an imaging spectrograph. This produces both Stokes and anti-Stokes spectra. By adjusting the laser beam’s polarization, the interfering Rayleigh intensity is sufficiently reduced without the use of a filter. The temperature measurements can be from below room temperature to about 1200 K. The method also works at temperatures >1200 K, but the use of vibrational Raman spectroscopy is probably better there. Also shown is an image that has simultaneously acquired, spatially resolved spectra from rotational Raman, vibrational Raman and laser-induced fluorescence. Such combined information might be used to diagnose a gaeous system in some detail. © 1997 John Wiley & Sons, Ltd.