Quantitative assessment of x-ray fluorescence holography for bcc Fe as a test case
Quantitative assessment of x-ray fluorescence holography for bcc Fe as a test case
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以 bcc Fe 为例的 X 射线荧光全息定量评估
DOI：
10.1103/physrevb.61.r830
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发表时间：
2000
影响因子：
3.7
通讯作者：
G. Materlik
中科院分区：
文献类型：
--
作者：
T. Hiort;D. Novikov;E. Kossel;G. Materlik
我们报告了一个纯粹的直接x射线荧光全息测量。它允许对重建的原子图像进行直接的数据评估和定量分析。用Fe $K\ensuremath{\alpha},\ensuremath{\beta}$谱线记录了bcc Fe单晶的实验全息图，并对其进行了三维重建。利用测量的科塞尔线的对称信息，获得了各向同性空间分辨率。荧光发射体原子在$(7\AA{}{)}^{3}.$的体积内成像其邻居，测量到邻居的距离和空间分辨率与计算全息图的值一致，误差在 $\ifmmode\pm\else\textpm\fi{}0.2\AA{}.$
We report a pure direct x-ray-fluorescence holography measurement. It allows a straightforward data evaluation and a quantitative analysis of the reconstructed atomic images. The experimental hologram of a bcc Fe single crystal recorded with the Fe $K\ensuremath{\alpha},\ensuremath{\beta}$ lines is presented together with its three-dimensional reconstruction. An isotropic spatial resolution is obtained by using the symmetry information from the measured Kossel lines. The fluorescence emitter atom images its neighbors in a volume of $(7\AA{}{)}^{3}.$ The measured distances to the neighbors and the spatial resolution agree with the values obtained from calculated holograms within the errors of $\ifmmode\pm\else\textpm\fi{}0.2\AA{}.$