ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France.
J Synchrotron Radiat. 2020 Mar 1;27(Pt 2):305-318. doi: 10.1107/S1600577519017235. Epub 2020 Feb 11.
A framework based on physical optics for simulating the effect of imperfect compound refractive lenses (CRLs) upon an X-ray beam is described, taking into account measured phase errors obtained from at-wavelength metrology. A CRL stack is modelled, with increasing complexity, as a single thin phase element, then as a more realistic compound element including absorption and thickness effects, and finally adding realistic optical imperfections to the CRL. Coherent and partially coherent simulations using Synchrotron Radiation Workshop (SRW) are used to evaluate the different models, the effects of the phase errors and to check the validity of the design equations and suitability of the figures of merit.
描述了一种基于物理光学的框架，用于模拟不完善的复合折射透镜（CRL）对 X 射线束的影响，同时考虑了从波长相位测量中获得的测量相位误差。以递增的复杂性将 CRL 堆叠建模为单个薄相位元件，然后建模为更现实的复合元件，包括吸收和厚度效应，最后为 CRL 添加现实的光学不完美。使用同步辐射研讨会（SRW）进行相干和部分相干模拟，以评估不同模型、相位误差的影响，并检查设计方程的有效性和优劣值的适用性。
