Femtosecond multimodal imaging with a laser-driven X-ray source
Femtosecond multimodal imaging with a laser-driven X-ray source
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DOI：
10.1038/s42005-023-01412-9
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发表时间：
2023-10-11
影响因子：
5.5
通讯作者：
Cipiccia，Silvia
中科院分区：
文献类型：
--
作者：
Doherty，Adam;Fourmaux，Sylvain;Cipiccia，Silvia
激光等离子体加速器是基于高功率激光与等离子体相互作用的紧凑型线性加速器，以形成比标准射频腔小1000倍的加速结构，并且它们带有嵌入式X射线源，即电子感应加速器源，具有独特的特性：小源尺寸和飞秒脉冲持续时间。一种尚未探索的利用电子感应加速器源的可能性来自于将其与成像方法相结合，该成像方法能够将传输和相位等多种信息编码为单次采集方法。在这项工作中，我们结合联合收割机边缘照明光束跟踪（EI-BT）与电子感应加速器X射线源，并提出了一个紧凑的光源下到飞秒时间尺度的多模态成像（传输，折射和散射）的演示。EI-BT的优点是它允许多模式X射线成像技术，允许在单次拍摄中访问来自标准低相干实验室X射线源的透射，折射和散射信号。
Laser-plasma accelerators are compact linear accelerators based on the interaction of high-power lasers with plasma to form accelerating structures up to 1000 times smaller than standard radiofrequency cavities, and they come with an embedded X-ray source, namely betatron source, with unique properties: small source size and femtosecond pulse duration. A still unexplored possibility to exploit the betatron source comes from combining it with imaging methods able to encode multiple information like transmission and phase into a single-shot acquisition approach. In this work, we combine edge illumination-beam tracking (EI-BT) with a betatron X-ray source and present the demonstration of multimodal imaging (transmission, refraction, and scattering) with a compact light source down to the femtosecond timescale. The advantage of EI-BT is that it allows multimodal X-ray imaging technique, granting access to transmission, refraction and scattering signals from standard low-coherence laboratory X-ray sources in a single shot.