Multiple-energy x-ray holography: Atomic images of hematite (Fe2O3)
Multiple-energy x-ray holography: Atomic images of hematite (Fe2O3)
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DOI：
10.1103/physrevlett.76.3132
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发表时间：
1996-04-22
影响因子：
8.6
通讯作者：
SanchezHanke, C
中科院分区：
文献类型：
--
作者：
Gog, T;Len, PM;SanchezHanke, C
采用多能 X 射线全息术 (MEXH) 对赤铁矿中 Fe 原子的局部原子环境进行成像。 MEXH 利用同步加速器辐射在样品内产生干涉场，然后根据积分荧光产量确定特定原子位点的近场强度。扫描倒易空间的扩展体积，通过全息图的傅里叶变换重建 Fe2O3 中的局部原子结构。通过对多个入射能量的数据求和，可以有效地抑制已知会使单能量全息图变形的图像像差。
Multiple-energy x-ray holography (MEXH) is employed to image the local atomic environment of Fe atoms in hematite. MEXH utilizes synchrotron radiation to generate an interference field within the sample, and then determines the strength of this near field at specific atomic sites from the integrated fluorescence yield. Scanning an extended volume of reciprocal space, the local atomic structure in Fe2O3 is reconstructed by Fourier transformation from the hologram. Image aberrations known to distort single-energy holograms are effectively suppressed by summing data for several incident energies.