同步辐射X射线三维显微成像

本介绍了利用同步辐射进行X射线三维成像的工作原理及进展状况，详细论述了X射线三维成像的两种方法，X射线全息及CT技术，以及通过两的结合（HCT）进行高分辨率三维成像的有关理论与实验技术；介绍了同轴全息中消除“双生像”噪声的数字方法，讨论了影响分辨率的各种因素；本还介绍了在国家同步辐射实验室软X射线实验站进行的生物样品X射线三维成像的实验及其结果。

X-RAY THREE-DIMENSIONALMICRO-IMAGING USING SYNCHROTRON RADIATION

The principle and progresses in X-ray 3D imaging using Synchrot ron Ra diation (SR) are introduced in this paper. Two types of X-ray 3D imaging techni ques, X-ray holograply and CT, and the theory and technology in high resolution 3D imaging with the combination of these two techniques-HCT, are described in detail. The digital methods for elimination the “twin image” noise from in-li ne holography are introduced, and the factors that limit the resolution are disc ussed. Some results of X-ray 3D HCT experiment with biological samples obtained in National Synchrotron Radiation Laboratory are shown.