Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. II. Dynamical theory,Acta Crystallographica Section A: Foundations and Advances

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Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. II. Dynamical theory
Acta Crystallographica Section A: Foundations and Advances ( IF 1.9 ) Pub Date : 2021-08-06 , DOI: 10.1107/s2053273321005775
V B Molodkin ₁ , S I Olikhovskii ₁ , S V Dmitriev ₁ , V V Lizunov ₁

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The analytical expressions for coherent and diffuse components of the integrated reflection coefficient are considered in the case of Bragg diffraction geometry for single crystals containing randomly distributed microdefects. These expressions are analyzed numerically for the cases when the instrumental integration of the diffracted X-ray intensity is performed on one, two or three dimensions in the reciprocal-lattice space. The influence of dynamical effects, i.e. primary extinction and anomalously weak and strong absorption, on the integrated intensities of X-ray scattering is investigated in relation to the crystal structure imperfections.

中文翻译：

布拉格衍射几何中不完美晶体的综合 X 射线散射强度的动力学效应。二、动力学理论

在包含随机分布的微缺陷的单晶的布拉格衍射几何的情况下，考虑了积分反射系数的相干和漫射分量的解析表达式。当衍射 X 射线强度的仪器积分在倒易晶格空间中的一个、两个或三个维度上执行的情况下，对这些表达式进行了数值分析。动力学效应，即初级消光和异常弱和强吸收，对 X 射线散射积分强度的影响与晶体结构缺陷有关。

更新日期：2021-09-02

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