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首页> 外文期刊>Journal of Applied Crystallography >Takagi-Taupin dynamical X-ray diffraction simulations of asymmetric X-ray diffraction from crystals: the effects of surface undulations
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Takagi-Taupin dynamical X-ray diffraction simulations of asymmetric X-ray diffraction from crystals: the effects of surface undulations

机译:Takagi-Taupin来自晶体的不对称X射线衍射的动态X射线衍射模拟:表面起伏的影响

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Dynamical X-ray diffraction simulations from crystals with surface undulations are reported. The Takagi-Taupin equations are applied and used to derive results in good agreement with experimental data reported in a separate paper [Macrander, Pereira, Huang, Kasman, Qian, Wojcik & Assoufid (2020). J. Appl. Cryst.53, https://doi.org/10.1107/S1600576720005166]. The development of Uragami [J. Phys. Soc. Jpn, (1969), 27, 147-154] is followed. Although previous work by Olekhnovich & Olekhnovich [Acta. Cryst. (1980), A36, 22-27] treated a crystal in the shape of a round cylinder, there do not seem to be any reports of previous dynamical X-ray diffraction treatments specifically for surface undulations. The significance of the present work is that it bridges the diffraction treatment of more classical dynamical diffraction theory, which assumes a flat surface, and the simple kinematic diffraction theory. The kinematic theory has, to date, been the primary means of simulating X-ray diffraction from surfaces.
机译:报道了具有表面起伏的晶体的动态X射线衍射模拟。 Akagi-Taupin方程被应用并用于与单独报告的实验数据达成良好的协议[宏大,Pereira,Huang,Kasman,Qian,Wojcik&Assoufid(2020年)。 J. Appl。 cryst.53,https://doi.org/10.1107/S1600576720005166]。 Uragami的发展[J.物理。 SOC。遵循JPN,(1969),27,147-154]。虽然以前的工作由Olekhnovich&Olekhnovich [Acta。晶体。 (1980),A36,22-27]处理了圆柱形的形状的晶体,似乎没有具体用于表面起伏的先前动态X射线衍射处理的报道。本作本作的重要性是它桥接了更古典动态衍射理论的衍射处理,该衍射理论具有平坦的表面,以及简单的运动衍射理论。迄今为止,运动学理论一直是模拟表面的X射线衍射的主要方法。

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