Ion Doppler Spectroscopy (IDS) is a diagnostic technique that measures plasma ion temperature and velocity without perturbing the plasma with a physical probe. The ZaP-HD Flow Z-Pinch Experiment at the University of Washington uses this technique to resolve radial temperature and velocity profiles of a Z-pinch plasma. The pinch lifetime is ∼100 µs; therefore, diagnostics capable of sub-microsecond resolution are required to measure the evolution of temperature and velocity profiles. The previous IDS diagnostic system was only capable of collecting a single measurement during a plasma pulse. An improved system has been developed to measure the radially resolved ion temperature and velocity for the entire Z-pinch lifetime. A Kirana 05M ultra-fast framing camera and Specialized Imaging lens ultraviolet intensifier are used to record up to 100 spectra per plasma pulse. The temperature is computed from Doppler broadening of the carbon-III (229.687 nm) impurity ion radiation, and the velocity is computed from the Doppler shift of carbon-III. Measurements are able to resolve the evolution of the ion temperature and velocity over the course of a plasma pulse. The diagnostic has significantly reduced the number of pulses required and provides a more coherent measurement of plasma dynamics than the previous system.

中文翻译：

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使用快速成帧光谱法测量 Z 夹点中的时空离子温度和速度

离子多普勒光谱 (IDS) 是一种诊断技术，可在不使用物理探头扰动等离子体的情况下测量等离子体离子温度和速度。华盛顿大学的 ZaP-HD Flow Z-Pinch 实验使用这种技术来解析 Z-pinch 等离子体的径向温度和速度分布。夹点寿命约为 100 µs；因此，需要具有亚微秒分辨率的诊断来测量温度和速度剖面的演变。以前的 IDS 诊断系统只能在等离子体脉冲期间收集单个测量值。已经开发了一种改进的系统来测量整个 Z 形收缩寿命的径向分辨离子温度和速度。Kirana 05M 超快速分幅相机和 Specialized Imaging 镜头紫外线增强器用于记录每个等离子体脉冲多达 100 个光谱。温度由碳-III (229.687 nm) 杂质离子辐射的多普勒展宽计算，速度由碳-III 的多普勒频移计算。测量能够解决等离子体脉冲过程中离子温度和速度的演变。该诊断显着减少了所需的脉冲数量，并提供了比以前系统更一致的等离子体动力学测量。测量能够解决等离子体脉冲过程中离子温度和速度的演变。该诊断显着减少了所需的脉冲数量，并提供了比以前系统更一致的等离子体动力学测量。测量能够解决等离子体脉冲过程中离子温度和速度的演变。该诊断显着减少了所需的脉冲数量，并提供了比以前系统更一致的等离子体动力学测量。