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    • 2. 发明授权
    • Method and system for instantaneously determining the temperature of a low density gas using ensemble ratioing of laser-induced fluorescence peaks
    • 使用激光诱导荧光峰的整体比率即时确定低密度气体的温度的方法和系统
    • US06543935B2
    • 2003-04-08
    • US09846129
    • 2001-04-30
    • R. Jeffrey BallaReginald J. Exton
    • R. Jeffrey BallaReginald J. Exton
    • G01K700
    • H05H1/0043G01K11/00G01K11/20
    • A method and system are provided for determining temperature of a low density gas seeded with molecules of iodine. The Cordes bands of the iodine molecules are excited with light energy of a known wavelength (e.g., between 175-210 nanometers) to generate fluorescent emission. At least a portion of the emission's light intensity is collected and used to generate an emission spectrograph. The spectrograph's vibrational energy level peaks are fitted to a vibrational Boltzmann distribution. Specifically, one of the vibrational energy level peaks associated with molecule population in a ground vibrational energy level at a wavelength greater than the known wavelength of the light energy is selected. Next, a plurality of ratios are generated that define a unique linear relationship for a temperature of the seeded environment. Each of these ratios is defined by a ratio of the selected one of the vibrational energy level peaks (in a ground vibrational energy level) to another unique peak (of the vibrational energy level peaks) associated with molecule population in a vibrational energy level that is greater than the ground vibrational energy level.
    • 提供了一种用于确定用碘分子种植的低密度气体的温度的方法和系统。 碘分子的Cordes带被已知波长的光能(例如,175-210纳米)激发,以产生荧光发射。 发射光强度的至少一部分被收集并用于产生发射光谱仪。 光谱仪的振动能级峰值适用于振动波尔兹曼分布。 具体地说,选择与波长比光能的已知波长大的地面振动能级中与分子群体相关的振动能量级峰值之一。 接下来,生成多个比率,其定义针对种子环境的温度的独特的线性关系。 这些比率中的每一个由振动能级水平峰值(在地面振动能级)与振动能级之间与分子群体相关的另一唯一峰值(振动能级峰值)的比率来定义, 大于地面振动能级。
    • 4. 发明授权
    • Vibration-free Raman Doppler velocimeter
    • 无振动拉曼多普勒测速仪
    • US4624561A
    • 1986-11-25
    • US727034
    • 1985-04-25
    • Reginald J. Exton
    • Reginald J. Exton
    • G01P5/26G01P3/36G01J3/44
    • G01P5/26
    • Method and apparatus unaffected by vibrational environments for obtaining measurements using Raman Doppler Velocimetry. Two laser beams, a pump beam 18 and a probe beam 22, are focused by a lens 21 to a point 25 in a flow 11. A lens 26 collimates the two beams. A beam splitter 27 dumps beam 18 and beam 22 is reflected by a corner cube 28 back to lens 26. Lens 26 then focuses the beam back to point 25. The reflected beam 22 and the backward and forward scattering at point 25 are detected by a detector 30 and processed by a boxcar averager 31. The lens 26 and corner cube 28 combination, called a retrometer 29, ensure that the measurements are unaffected by vibrations.
    • 不受振动环境影响的方法和装置,用于使用拉曼多普勒测速法获得测量。 两个激光束,泵浦光束18和探测光束22被透镜21聚焦到流11中的点25上。透镜26准直两个光束。 分束器27将光束18倾倒并且光束22被拐角立方体28反射回到透镜26.透镜26然后将光束聚焦回点25.反射光束22和点25处的向后和向前散射由 检测器30并由箱式平均机31处理。透镜26和角立方体28组合(称为测位仪29)确保测量不受振动的影响。