Secondary Extinction in Large Single Crystal

• 作者: Feng, Dachun Hu, Huachen Yang, Bin Yang, Zhen Zhou, Yunsong
• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: SECONDARY EXTINCTION X-RAY DIFFRACTION NEUTRON DIFFRACTION
• 年，卷（期）: 1995,（1）
• 页码范围: 67-72
• 页数: 6页
• 分类号: O4

摘要

【正】 Universal expressions for the secondary extinction factor in X-ray andneutron crystallography are developed,based on an exact solution of the power transferequations using three dimensionless parameters.As a demonstration of the feasibility ofthese expressions,the long-debated problem of diffraction in a large lithium fluoridesingle crystal is reanalyzed by using Lawrence’s data set,with all the hitherto omittedstrong reflections (Y down to 0.20) included,and a R factor value of less than 0.014 isobtained.