论文标题
基于相对论电子的超快硬X射线源
Ultrafast hard X-ray sources based on Relativistic Electrons at ELI Beamlines
论文作者
论文摘要
我们报告了LWFA驱动的X射线源在Eli Beain线上的开发。 Eli Gammatron Beam系提供了从Betatron方案中的1-100 KEV和Compton方案中的MEV的X射线脉冲。最先进的Ti：SA二极管泵送的HAPLS激光器（10-30 J，30 FS @10 Hz）用作这些X射线源的驾驶激光器。这些来源的特征是低差异（<10 mrad），较小的源大小（少量μm），短脉冲持续时间（几个fs）和光子通量，每个脉冲达到1010个光子。此外，在ELI等离子体物理平台（P3）中开发了一个单独的BETATRON X射线源，该来源将作为各种血浆物理实验的主动诊断。 P3致力于实验室天体物理学，HED物理学，多光束实验，温暖的密集物质和基本研究。除了呈现两个X射线源外，我们还将引入一种新型的光学探测方法，具有提高干涉敏感性以表征低密度气体Jets的敏感性。通过使用新的光学配置，采用多个通过对象的探针光束和中继成像在单个通过之间和短探测器（405 nm）的物体（405 nm）的情况下，同时使用新型的光学配置来实现灵敏度。
We report the LWFA driven X-ray sources development at ELI beamlines. ELI Gammatron beamline provides X-ray pulses of energies from 1-100 keV in betatron scheme, and up to a MeV in Compton scheme. A state-of-the-art Ti:Sa diode-pumped HAPLS laser (10-30 J, 30 fs @10 Hz) is used as a driving laser for these X-ray sources. These sources are characterized with a low divergence (< 10 mrad), small source size (few μm), short pulse duration (a few fs) and photon flux up to1010 photons per pulse. In addition, a separate Betatron X-ray source is being developed in the ELI Plasma Physics Platform (P3)that will serve as an active diagnostics of various plasma physics experiments. P3 is dedicated to laboratory astrophysics, HED physics, multi-beam experiments, warm dense matter and fundamental research. Besides the presentation of the two X-ray sources, we will also introduce a novel optical probing method with increased interferometric sensitivity for characterization of low-density gas jets. The sensitivity is achieved together with using a novel optical configuration employing multiple passes of the probe beam through the object and relay-imaging of the object between the individual passes, and a short probing beam (405 nm).
