用θ-2θ型衍射仪测定溶液结构的新方法  

A New Method to Determine Solution with θ 2θ Type 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

出　　处：《分析测试技术与仪器》1998年第2期108-115,共8页Analysis and Testing Technology and Instruments

基　　金：中国科学院基础性研究"九五"预研课题;国家自然科学基金

摘　　要：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。优化了液体Ｘ射线衍射数据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型衍射仪自由散射比较，表明ＤＲＦ分辨率有所提高。A new experimental diffractometry to determine the structure of aqueous electrolyte solution with θ 2θ type powder diffractometer has been described The super thick liquid sample cells with the isothermal function have been designed and the correction procedures for the diffraction intensity of window on the cell were proposed Computer programs for the analysis of data on X ray diffraction by liquid and the refinement of structure parameters have been developed, based on Johansson′s and Yamaguchi′s works A very satisfactory experimental result of molten salt of hexaquamanganese nitrate has been obtained The comparision between the radial distribution function curve from θ 2θ type diffractometer and the free surbace scattering from θ θ liquid deffractometer show that the resolveng power has improved

关 键 词：液体衍射技术 溶液结构 高浓 硝酸锰水溶液 分析 

分 类 号：O646.17[理学—物理化学]