【作者】 谢红兰； 高鸿奕； 陈建文； 朱化凤； 李儒新； 徐至展；

【Author】 Xie Hong-Lan Gao Hong-Yi Chen Jian-Wen Zhu Hua-Feng Xu Zhi-Zhan(Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800)

【机构】 中国科学院上海光学精密机械研究所；

【摘要】 X射线荧光全息术,通过记录样品的荧光全息图并利用计算机重构,能够得到单晶或准晶体内部原子的三维排列信息,这对于材料科学将有着非凡的意义。本文先简单介绍X射线荧光全息术的工作原理及其最近国外的实验研究的进展情况。根据X射线荧光全息术的成像原理,我们以一个由27个Fe原子成立方排列的晶格为模型进行数值模拟(包括荧光全息图及其重构像),在[001]晶面上得到Fe原子的像,与该晶格模型的原子位置一致,表明运用这种X射线荧光全息术,能够在原子水平上得到单晶或准晶体的内部结构图像。更多还原

【Abstract】 X-ray fluorescence holography can get information of 3D atomic arrangements in single crystals or quasi-crystals, recorded a fluorescence hologram of a test sample and reconstructed by using a computer program. This is very important to material science. At first, this paper introduces simply the principle of X-ray fluorescence holography and the foreign experimental development about it recently. Based on the principle of X-ray fluorescence holography, we numerically simulated the holograms of a 27-Fe-atomcubic lattice and reconstruct atomic images at [001] crystallographic plane from them. The result indicates one can get internal structure images of single crystals at atomic-resolution arrangements by using X-ray fluorescence holography.更多还原