溶液结构的X射线衍射研究──4.用粉末衍射仪精确测定溶液结构的新方法  

X-ray Diffraction Studies on Structure of Solutions 4. A New Method to Determine Solution Structure with Powder diffractometer

作　　者：房春晖[1] 房艳[1] 王鲁英[1] 宋大康 吴西宁 

机构地区：[1]中国科学院盐湖研究所,西安710043

出　　处：《盐湖研究》1997年第3期32-41,共10页Journal of Salt Lake Research

基　　金：中国科学院基础性研究"九五"预研课题!BH-20;国家自然科学基金!29543012

摘　　要：本文叙述了用θ—2θ型X射线衍射仪精确测定电解质溶液结构的新的实验技术，设计制作了具有恒温功能的超厚液体样品池，并建立了样品池窗口强度的校正方法。建立在Johansson和Yamaguchi工作基础上，发展了液体X射线衍射数据处理和结构参数精细化的计算机程序，获得了非常令人满意的实验结果。由θ－2θ型X射线衍射仪精确测定的径向分布函数与θ－θ型衍射自由表面散射比较，表明DRF分辩率有所提高。A new method to determine the structure of aqueous electrolyte with θ- 2θ type powder diffractometer has been developed in the paper. The super-thick liquid sample cells with the isothermal function have been disigned and the correction procedures for the diffraction miensity of window on the cell proposed. A very satisfactory experimental result of molten salt of hexaquamanganese nitrate has been obtained. The comparision between the radial distribution function cruve with powder diffractometer and θ-θ liquid diffractometer by the free surface scattering show that the resolving power has improved to the extent.

关 键 词：溶液结构 径向分布函数 粉末衍射仪 X射线衍射 

分 类 号：O645.4[理学—物理化学] O657.3[理学—化学]