非对称线形衍射线的线形拟合与Κα双线分离

应用科学学报 ›› 1987, Vol. 5 ›› Issue (2): 180-184.

非对称线形衍射线的线形拟合与Κα双线分离

郭常霖, 刘韵吉

中国科学院上海硅酸盐研究所

收稿日期:1984-08-04 修回日期:1985-03-13 出版日期:1987-06-30 发布日期:1987-06-30

A METHOD FOR FITTING ASYMMETRIC DIFFRACTION LINE PROFILE AND SEPARATING Κα DOUBLET

GUO CHANGLIN, LIU YUNJI

Shanghai Institute of Ceramics, Academia Sinica

Received:1984-08-04 Revised:1985-03-13 Online:1987-06-30 Published:1987-06-30

摘要/Abstract

摘要： X射线衍射或其他衍射、光谱、频谱图中常常出现谱线的重叠现象。X射线衍射图中低角区总存在Κα双线重叠的问题.对X射线衍射线的线形拟合及Κα双线分离方法的研究,在晶体结构分析、晶粒大小测定、物相定量和晶胞参数精密测定等工作中都有重要的意义.

Abstract: Generally, the X-ray diffraction line profile is asymmetrical. A method for fitting the asymmetric diffraction line profile and separating the asymmetric Κα doublet is presented in this paper. According to the diffraction line profile fitting experiments for various functions, a method of a weighted Gauss-Oauchy combination function for asymmetric X-ray diffraction line profile is suggested. It has been proved by practical calculations that when the asymmetric profile function is employedin fitting practical diffraction line, the method is simple and convenient with sati-sfaetorily precise results.

郭常霖, 刘韵吉. 非对称线形衍射线的线形拟合与Κα双线分离[J]. 应用科学学报, 1987, 5(2): 180-184.

GUO CHANGLIN, LIU YUNJI. A METHOD FOR FITTING ASYMMETRIC DIFFRACTION LINE PROFILE AND SEPARATING Κα DOUBLET[J]. Journal of Applied Sciences, 1987, 5(2): 180-184.