Sensing the wavefront of x-ray free-electron lasers using aerosol spheres
Sensing the wavefront of x-ray free-electron lasers using aerosol spheres
复制标题
DOI：
10.1364/oe.21.012385
复制
发表时间：
2013-05-20
期刊：
影响因子：
3.8
通讯作者：
Bogan, Michael J.
中科院分区：
文献类型：
--
作者：
Loh, N. Duane;Starodub, Dmitri;Bogan, Michael J.
表征强聚焦X射线自由电子激光（FEL）脉冲对于它们在衍射成像中的应用至关重要。我们描述了如何从70 nm半径的聚苯乙烯球产生的衍射图案的集合中检索峰值强度为1021 W/m（2）的硬X射线脉冲上的平均相位倾斜和强度的分布，以模仿波前传感器的方式。除了表明，自适应几何校正可能是必要的随机注入样品源的衍射数据，我们的论文证明了收集统计结构脉冲只使用它们产生的衍射图案的可能性，并强调了研究其对单粒子衍射成像的影响的必要性。(C)2013年美国光学学会
Characterizing intense, focused x-ray free electron laser (FEL) pulses is crucial for their use in diffractive imaging. We describe how the distribution of average phase tilts and intensities on hard x-ray pulses with peak intensities of 1021 W/m(2) can be retrieved from an ensemble of diffraction patterns produced by 70 nm-radius polystyrene spheres, in a manner that mimics wavefront sensors. Besides showing that an adaptive geometric correction may be necessary for diffraction data from randomly injected sample sources, our paper demonstrates the possibility of collecting statistics on structured pulses using only the diffraction patterns they generate and highlights the imperative to study its impact on single-particle diffractive imaging. (C) 2013 Optical Society of America