| 近完美晶体X射线统计动力学 |
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| 引用本文： | 李明,麦振洪,崔树范.近完美晶体X射线统计动力学[J].物理学报,1994,43(1):84-90. |
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| 作者姓名： | 李明 麦振洪 崔树范 |
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| 作者单位： | 中国科学院物理研究所 |
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| 摘 要： | 将Ｔａｋａｇｉ－Ｔａｕｐｉｎ方程的一种新的表述形式应用于近完美晶体中，得到存在随机分布的微小晶格畸变时，近完美晶体的衍射统计动力学方程。引出静态Ｄｅｂｙｅ－Ｗａｌｌｅｒ因子表征晶体的完美性，并得到Ｌａｕｅ衍射条件下一束窄的入射Ｘ射线在晶体中激发的波场的强度分布表达式；讨论了该表达式在研究晶体中ｎｍ数量级点状微缺陷方面的应用．
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| 关 键 词： | 晶体 X射线衍射 缺陷 统计 |
| 收稿时间： | 1992-10-19 |
STATISTICAL DYNAMICAL DIFFRACTION IN NEARLY PERFECT CRYSTALS |
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| LI MING,MAI ZHEN-HONG and CUI SHU-PAN.STATISTICAL DYNAMICAL DIFFRACTION IN NEARLY PERFECT CRYSTALS[J].Acta Physica Sinica,1994,43(1):84-90. |
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| Authors: | LI MING MAI ZHEN-HONG and CUI SHU-PAN |
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| Abstract: | A new expression of Takagi-Taupin equations is applied to nearly perfect crystals with statistical lattice distortion, with which a formalism of the dynamical diffraction is proposed. A static Debye-Waller factor E is introduced to characterize the crystal. A solution of the equations is presented which describe the intensity distribution due to a narrow incident wave in the topography of a statistically homogeneous crystal. The application of this theory to the measuring of the micro-defects in crvstals is discussed. |
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