X‐ray diffraction study of liquid mercury over temperature range 173 to 473 K
X‐ray diffraction study of liquid mercury over temperature range 173 to 473 K
复制标题
173 至 473 K 温度范围内液态汞的 X 射线衍射研究
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
C. Segaud
中科院分区：
文献类型：
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作者：
L. Bosio;R. Cortès;C. Segaud
用衍射光束单色的θ-θ衍射仪，用CuKα和MoKα射线研究了液态汞的结构。特别注意的是液体结构的温度依赖性，使用直径约5 μm的小液滴实际上允许测量低于正常熔点60 K的过冷液体。在所研究的温度范围内，第一配位数没有显著变化，结构因子的第一峰的形状和高度的变化可能是由于温度降低时一些长程相关性增加。基于弛豫晶格的结构模型被发现符合令人满意的实验对相关函数的液态汞。
The structure of liquid mercury has been studied with both CuKα and MoKα radiation using a theta–theta diffractometer with monochromator in the diffracted beam. Special attention has been paid to the temperature dependence of the liquid structure and the use of small droplets of about 5 μm diameter actually allowed measurements on supercooled liquid down to 60 K below the normal melting point. No significant variation in the first coordination number is observed over the temperature range studied, the change in the shape and the height of the first peak of the structure factor being probably due to some long range correlation increase when the temperature is lowered. A structure model based on a relaxed lattice is found to fit satisfactorily the experimental pair correlation function for liquid mercury.