We present a setup for time-resolved X-ray diffraction based on a short pulse, laser-driven plasma X-ray source. The employed modular design provides high flexibility to adapt the setup to the specific requirements (e.g., X-ray optics and sample environment) of particular applications. The configuration discussed here has been optimized toward high angular/momentum resolution and uses K α -radiation (4.51 keV) from a Ti wire-target in combination with a toroidally bent crystal for collection, monochromatization, and focusing of the emitted radiation. 2 × 10 5 Ti-K α1 photons per pulse with 10 - 4 relative bandwidth are delivered to the sample at a repetition rate of 10 Hz. This allows for the high dynamic range (104) measurements of transient changes in the rocking curves of materials as for example induced by laser-triggered strain waves.

中文翻译：

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使用优化的短脉冲激光等离子体 X 射线源进行时间分辨衍射。

我们提出了一种基于短脉冲、激光驱动等离子体 X 射线源的时间分辨 X 射线衍射装置。所采用的模块化设计提供了高度的灵活性，可以使设置适应特定应用的特定要求（例如，X 射线光学器件和样品环境）。这里讨论的配置已经针对高角/动量分辨率进行了优化，并使用来自 Ti 线靶的 K α 辐射 (4.51 keV) 与环形弯曲晶体相结合，用于收集、单色化和聚焦发射的辐射。每个脉冲具有 10 - 4 相对带宽的 2 × 10 5 Ti-K α1 光子以 10 Hz 的重复率传送到样品。这允许对例如由激光触发应变波引起的材料摇摆曲线的瞬态变化进行高动态范围（104）测量。