论文标题
圆柱弯曲不对称laue晶体的聚焦和能量分散特性
Focusing and Energy Dispersion Properties of a Cylindrically Bent Asymmetric Laue Crystal
论文作者
论文摘要
弹性弯曲的单晶laue情况衍射晶体为成像和光谱应用提供了有趣的新机会。但是，衍射特性可以很好地理解，但是，可以轻松地对衍射梁进行建模的能力阻碍评估许多应用所需的焦点，相和能量分散性能。这项工作开始收集射线在弯曲的laue晶体中追踪衍射光束所需的元素，以掺入其他强大的射线跟踪应用（例如阴影）中。具体而言，我们解决了弯曲的laue晶体中的条件，当在目标X射线能量（所谓的“魔术条件”）中满足特定的不对称角度时，圆柱形弯曲的laue晶体将聚焦在单个位置的所有多色衍射梁。可以最大程度地减少光束的焦点，但是这种情况也可以产生出色的能量分散性能。讨论了这种有趣的聚焦和能量分散现象的概念和数学方面。
Elastically bent single-crystal Laue case diffraction crystals provide interesting new opportunities for imaging and spectroscopy applications. The diffraction properties are well understood, however, the ability to easily model the diffracted beams hinders assessment of the focal, phase and energy dispersive properties needed for many applications. This work begins to collect the elements needed to ray trace diffracted beams within bent Laue crystals for the purpose of incorporation into other powerful ray tracing applications such as SHADOW. Specifically, we address the condition in a bent Laue crystal where a cylindrically bent Laue crystal will focus all the polychromatic diffracted beams at a single location when a specific asymmetry angle condition is met for a target x-ray energy - the so-called "magic condition". The focal size of the beam can be minimized, but this condition also results in excellent energy-dispersive properties. The conceptual and mathematical aspects of this interesting focusing and energy dispersive phenomenon is discussed.
