论文标题
时间分辨的衍射，具有优化的短脉冲激光等离子体X射线源
Time-resolved diffraction with an optimized short pulse laser plasma X-ray source
论文作者
论文摘要
我们基于短脉冲激光驱动的等离子体X射线源提供时间分辨X射线衍射的设置。所采用的模块化设计提供了很高的灵活性，可以使设置适应特定应用程序的特定要求（例如X射线光学元件，示例环境）。此处讨论的配置已针对高角度/动量分辨率进行了优化，并使用ti电线定位的K $_α$放射线（4.51 keV），并结合使用环形弯曲的晶体进行收集，单色晶体化和发射辐射的聚焦。 $ 2 \ times 10^5 $ ti-k $ _ {\ alpha1} $光子每脉冲，$ 10^{ - 4} $相对带宽以10 Hz的重复速率交付给样品。这允许高度动态范围（$ 10^4 $）测量材料摇摆曲线的瞬态变化，例如由激光触发的应变波引起的。
We present a set-up for time-resolved X-ray diffraction based on a short pulse, laser-driven plasma X-ray source. The employed modular design provides high flexibility to adapt the set-up to the specific requirements (e.g. X-ray optics, sample environment) of particular applications. The configuration discussed here has been optimized towards high angular/momentum resolution and uses K$_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. $2\times 10^5$ Ti-K$_{\alpha1}$ photons per pulse with $10^{-4}$ relative bandwidth are delivered to the sample at 10 Hz repetition rate. This allows for high dynamic range ($10^4$) measurements of transient changes of the rocking curves of materials as for example induced by laser-triggered strain waves.
