Hagemann Johannes, Salditt Tim
Opt Express. 2018 Jan 8;26(1):242-253. doi: 10.1364/OE.26.000242.
We study by numerical simulation how spatial coherence affects the reconstruction quality of images in coherent diffractive x-ray imaging. Using a conceptually simple, but computationally demanding approach, we have simulated diffraction data recorded under partial coherence, and then use the data for iterative reconstruction algorithms using a support constraint. By comparison of experimental regimes and parameters, we observe a significantly higher robustness against partially coherent illumination in the near-field compared to the far-field setting.
我们通过数值模拟研究空间相干性如何影响相干衍射X射线成像中图像的重建质量。我们采用了一种概念上简单但计算量很大的方法，模拟了在部分相干条件下记录的衍射数据，然后将这些数据用于使用支撑约束的迭代重建算法。通过比较实验条件和参数，我们观察到与远场设置相比，近场中对部分相干照明具有显著更高的稳健性。
