标题： 面向成像应用的高重复率激光驱动X射线源研究 显示英文标题

标题： Research towards high-repetition rate laser-driven X-ray sources for imaging applications

摘要： 电子的激光尾波加速是基于汤姆逊散射或贝塔atron辐射的多种新型X射线源的基础。后者提供了高光子通量和小光源尺寸，这两者都是高质量X射线成像的先决条件。此外，原理验证实验已经证明了其在断层扫描成像中的应用。到目前为止，获取完整的断层扫描数据集需要数小时的采集时间。基于激光系统、探测器和重建算法的改进，我们能够将完整断层扫描的时间缩短至3分钟。在本文中，我们讨论这些结果并展望未来的成像系统。 显示英文摘要

摘要： Laser wakefield acceleration of electrons represents a basis for several types of novel X-ray sources based on Thomson scattering or betatron radiation. The latter provides a high photon flux and a small source size, both being prerequisites for high-quality X-ray imaging. Furthermore, proof-of-principle experiments have demonstrated its application for tomographic imaging. So far this required several hours of acquisition time for a complete tomographic data set. Based on improvements to the laser system, detectors and reconstruction algorithms, we were able to reduce this time for a full tomographic scan to 3 minutes. In this paper, we discuss these results and give a prospect to future imaging systems.