Optimized polychromatic x-ray imaging with asymmetrically cut bent crystals
Optimized polychromatic x-ray imaging with asymmetrically cut bent crystals
复制标题
使用不对称切割的弯曲晶体优化多色 X 射线成像
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
E. Förster
中科院分区：
文献类型：
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作者：
S. Podorov;O. Renner;O. Wehrhan;E. Förster
讨论了布拉格几何中不对称切割弯曲晶体的聚焦特性。提出了优化 X 射线源一维和二维多色成像的条件。在特定配置中，采用不对称切割晶体的方案比对称衍射光学元件提供更小的像差和略高的收集效率。分析结果与射线追踪模拟进行了交叉检验，在一维情况下通过实验验证了理论预测的有效性。
The focusing properties of asymmetrically cut bent crystals in Bragg geometry are discussed. The conditions for optimized one- and two-dimensional polychromatic imaging of x-ray sources are proposed. In particular configurations, the schemes with asymmetrically cut crystals provide smaller aberrations and slightly higher collection efficiency than symmetrically diffracting optical elements. The analytical results are cross-checked with ray-tracing simulations, the validity of theoretical predictions is verified experimentally for one-dimensional case.