de Jonge Martin D, Vogt Stefan, Legnini Daniel, McNulty Ian, Rau Christoph, Paterson David, Hornberger Benjamin, Holzner Christian, Jacobsen Chris
Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4856, USA.
Nucl Instrum Methods Phys Res A. 2007 Nov 11;582(1):218-220. doi: 10.1016/j.nima.2007.08.111.
We developed a technique for performing quantitative phase reconstructions from differential phase contrast images obtained using a configured detector in a scanning transmission X-ray microscope geometry. The technique uses geometric optics to describe the interaction of the X-ray beam with the specimen, which allows interpretation of the measured intensities in terms of the derivative of the phase thickness. Integration of the resulting directional derivatives is performed using a Fourier integration technique. We demonstrate the approach by reconstructing simulated measurements of a 0.5-µm-diameter gold sphere at 7-keV photon energy.
我们开发了一种技术，可根据在扫描透射X射线显微镜几何结构中使用配置探测器获得的微分相衬图像进行定量相位重建。该技术利用几何光学来描述X射线束与样品的相互作用，这使得能够根据相厚度的导数来解释测量强度。使用傅里叶积分技术对所得方向导数进行积分。我们通过重建7千电子伏特光子能量下直径为0.5微米的金纳米球的模拟测量结果来演示该方法。
