论文标题
Megahertz-rate超快X射线散射和全息成像在欧洲XFEL
Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL
论文作者
论文摘要
X射线自由电子激光器（XFELS）的出现彻底改变了基本科学，从原子能到凝聚的物理学，从化学到生物学，使研究人员可以访问具有前所未有的亮度，相干性和脉冲驱动的X射线。直到最近，所有XFEL设施都以相对较低的重复率提供了X射线脉冲，数据统计数据有限。在这里，我们介绍了欧洲XFEL的光谱和相干散射（SCS）仪器的第一个Megahertz重复率X射线散射实验的结果。我们说明了SCS仪器提供的实验功能，这是由于MHz重复率的运行以及新型DSSC 2D成像检测器的可用性。选择固态样品中的时间分辨磁X射线散射和全息成像实验作为代表性，为以巨麦速率的速率提供了理想的测试床。我们的结果与软X射线范围内的任何其他非破坏性XFEL实验相关，并且适用于任何其他非破坏性XFEL实验。
The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers access to X-rays with unprecedented brightness, coherence, and pulse duration. All XFEL facilities built until recently provided X-ray pulses at a relatively low repetition rate, with limited data statistics. Here, we present the results from the first megahertz repetition rate X-ray scattering experiments at the Spectroscopy and Coherent Scattering (SCS) instrument of the European XFEL. We illustrate the experimental capabilities that the SCS instrument offers, resulting from the operation at MHz repetition rates and the availability of the novel DSSC 2D imaging detector. Time-resolved magnetic X-ray scattering and holographic imaging experiments in solid state samples were chosen as representative, providing an ideal test-bed for operation at megahertz rates. Our results are relevant and applicable to any other non-destructive XFEL experiments in the soft X-ray range.
