Bragg-Laue X-ray dynamical diffraction on perfect and deformed lateral crystalline structures

被引：17
作者：
Punegov, Vasily I. [1 ,2 ]
Kolosov, Sergey I. [1 ]
Pavlov, Konstantin M. [3 ,4 ]
机构：
[1] Russian Acad Sci, Ural Div, Komi Res Ctr, Syktyvkar 167982, Russia
[2] Syktyvkar State Univ, Syktyvkar 167001, Russia
[3] Univ New England, Sch Sci & Technol, Armidale, NSW 2351, Australia
[4] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia
来源：
JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2016年 / 49卷
基金：
俄罗斯基础研究基金会;
关键词：
X-ray dynamical diffraction theory; lateral structures; lateral crystals; reciprocal space maps; Bragg-Laue geometry; coherent diffraction imaging; deformations; FINITE POLYHEDRAL CRYSTALS; LEHMANN INTERFERENCE PATTERNS; TAKAGI-TAUPIN EQUATIONS; PENDELLOSUNG FRINGES; DISTORTED CRYSTALS; PRIMARY EXTINCTION; SINGLE-CRYSTAL; WAVE;
D O I：
10.1107/S1600576716008396
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The new dynamical diffraction approach to X-ray diffraction on lateral crystalline structures has been developed to investigate the angular and spatial distribution of wavefields in the case of the Bragg-Laue geometry in non-perfect lateral structures. This approach allows one to calculate reciprocal space maps for deformed lateral crystals having rectangular cross sections for both the transmitted and reflected wavefields. Numerical modelling is performed for crystals with different lateral sizes, thicknesses and deformations. The approach can be used in coherent diffraction imaging to simulate Fraunhofer diffraction patterns produced by relatively large deformed crystals.
引用
收藏
页码：1190 / 1202
页数：13
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