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首页> 外文会议>IEEE International Conference on Plasma Science >Streaked Thomson Scattering To Measure Heating Of Laboratory Plasma Jets By The Probe Laser
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Streaked Thomson Scattering To Measure Heating Of Laboratory Plasma Jets By The Probe Laser

机译：条纹Thomson散射通过探针激光测量实验室等离子流的热量

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jet by inverse bremsstrahlung, creating a density bubble in the jet. This was demonstrated by reducing the probe laser energy to 1 J, which reduced the measured electron temperature in the jet from about 40 to 20 eV and nearly eliminated the bubble. These measurements were made using a time gated spectrometer, with at least a 5 ns gate window, in order to encompass the entire 3 ns laser pulse. Therefore, no time dependent electron temperature measurements could be made from the Thomson scattering spectra. We are now developing an experimental arrangement to send the collected scattered spectra into a streak camera, in order to determine the plasma temperature as a function of time throughout the 3 ns laser pulse. With the streak camera data, we hope to track the changing plasma parameters during the laser heating of the plasma jet. In the future we hope to extend this diagnostic arrangement to other configurations, enabling time resolved measurements of the plasma parameters of various plasmas.
机译：逆致射流，在射流中产生密度气泡。通过将探针激光能量降低到1 J可以证明这一点，这将射流中测得的电子温度从约40 eV降低到几乎消除了气泡。使用包含至少5 ns选通窗口的时间选通光谱仪进行这些测量，以便涵盖整个3 ns激光脉冲。因此，无法从Thomson散射光谱进行时间相关的电子温度测量。现在，我们正在开发一种实验装置，将收集的散射光谱发送到条纹相机中，以便确定整个3 ns激光脉冲中随时间变化的等离子体温度。借助条纹相机数据，我们希望在等离子体射流的激光加热过程中跟踪变化的等离子体参数。将来，我们希望将这种诊断方式扩展到其他配置，以实现各种血浆的血浆参数的时间分辨测量。

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