Development and application of variable-magnification x-ray Bragg magnifiers
Development and application of variable-magnification x-ray Bragg magnifiers
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变倍X射线布拉格放大器的研制与应用
DOI：
10.1016/j.nima.2013.12.038
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Y. Takahashi and H. Sugiyama
中科院分区：
文献类型：
--
作者：
K. Hirano;Y. Takahashi and H. Sugiyama
提出了一种新型的可变放大倍数X射线布喇格放大器。我们描述了基于X射线衍射动力学理论的放大器的基本特性，并在光子工厂BL-14 B垂直摇摆器光束线上对其性能进行了实验研究。采用Si（2 2 0）非对称晶体作为布拉格放大器，在0 112 nm波长处成功地将放大因子M控制在0 1 ~ 10 0之间。用像素尺寸为23 μm×23 μm的X射线CCD相机观测到的空间分辨率在M =10时为10 μm，M =1时为50 μm，M =0.17时为250 μm。作为示范，我们成功地使用了X射线放大镜的计算机断层扫描的非破坏性观察的玻璃管在几个放大倍数。
A novel x-ray Bragg magnifier of variable magnification is proposed. We describe the basic properties of the magnifier based on the dynamical theory of x-ray diffraction, and experimentally investigated its performance at the vertical wiggler beamline BL-14B of the Photon Factory. Using a Si(2 2 0) asymmetric crystal as the Bragg magnifier, we successfully controlled the magnification factor,M, between 0.1 and 10.0 at a wavelength of 0.112 nm. The observed spatial resolution with an x-ray CCD camera, the pixel size of which was 23 μm×23 μm, was 10 μm atM=10, 50 μm atM=1 and 250 μm atM=0.17. As a demonstration, we successfully used the x-ray magnifier for computed tomography for the non-destructive observation of a glass tube at several magnification factors.