The structure of liquid mercury
The structure of liquid mercury
复制标题
液态汞的结构
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
G. I. Williams
中科院分区：
文献类型：
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作者：
V. G. Rivlin;R. Waghorne;G. I. Williams
在真空中，在-36 °、-10 °和+27 ° C下，从液态汞中获得了X射线衍射图。所有的强度模式的液体显示偏离简单的混合，在主峰的高角度侧有一个附属的最大值，表明一定程度的结构。每条强度曲线都可以解释为两个独立图案彼此叠加的结果，并且仅在主峰附近解析。强度曲线的径向分布分析给出了原子最可能接近的距离为3.07埃;第二个距离约为2.85埃是从观察到的辅助最大值导出的。这些距离可以与固态同素异形体α和β汞的两个最短距离（分别为3.005和2.825）密切相关。这表明，固态的内聚力至少在某种程度上存在于液体中。这些力的性质和液体中的构型只能是一个物理现象。
Abstract X-ray diffraction patterns have been obtained from liquid mercury at −36°, −10° and +27°c in vacuo. All the intensity patterns of the liquid show a departure from simple mixing in that there is a subsidiary maximum on the high-angle side of the main peak, indicating some degree of structure. Each intensity curve can be interpreted as the result of two separate patterns superimposed on one another and resolved only in the neighbourhood of the main peak. The radial distribution analysis of the intensity curves gives the most probable distance of close approach of the atoms as 3·07 A; a second distance of about 2·85 A is derived from the observed subsidiary maximum. These distances can be correlated closely with the two shortest distances of the solid allotropes, α and β mercury (3·005 A and 2·825 A respectively). This suggests that the cohesive forces in the solid state exist, to some extent at least, in the liquid. The nature of these forces and of the configurations in the liquid can only be a ma...