具有原子分辨率的x射线荧光全息术的数值模拟研究

根据x射线荧光全息术的成像原理，对体心立方晶系的Fe单晶进行了数值模拟（包括荧光全 息图及其重构像），在各个晶面（001，010，100）上得到Fe原子的像，与Fe的晶格模型的 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. 关键词： x射线荧光全息术 同步辐射 晶体结构 傅里叶变换

Numerical simulation study for atomic-resolution x-ray fluorescence holography

Based on the principle of x-ray fluorescence holography, we numerically simulate d an iron single crystal model of a body-centred cubic lattice. From the fluores cence hologram produced numerically, the Fe atomic images were reconstructed. Th e atomic images of the (001),(100),(010) crystallographic planes were consistent with the corresponding atomic positions of the model. The result indicates that one can obtain internal structure images of single crystals at atomic-resolutio n by using x-ray fluorescence holography.