论文标题
实验性观察液体TE中最大密度波动
Experimental Observation of Maximum Density Fluctuation in Liquid Te
论文作者
论文摘要
我们使用同步加速器辐射设施对液体TE进行了小角度的X射线散射测量，并观察到超冷区域620 K接近620 K的最大散射强度（熔化温度723 K）。该结果是对与液态液相变过临界密度波动的脊线的实验性观察，该临界密度波动是在超冷区域中存在的，并验证了过渡的存在。据报道，超冷的液态水的结果相似，证明了解释这些“异常液体”的热力学的液体液体过渡概念（或不均匀模型）的普遍性。此外，作为一个更重要的问题，已经证明，即使在其热平衡状态下，液体也可能在介质尺度上是不均匀的。这将有助于对包括玻璃液体在内的液体物理学有更深入的了解。
We performed small-angle X-ray scattering measurements of liquid Te using a synchrotron radiation facility and observed the maximum scattering intensity near 620 K in the supercooled region (melting temperature 723 K). This result is an experimental observation of the ridge line of the critical density fluctuation associated with the liquid-liquid phase transition that is argued to exist in the supercooled region and verifies the existence of the transition. Similar results have been reported for supercooled liquid water, demonstrating the universality of the liquid-liquid transition concept (or inhomogeneous model) in explaining the thermodynamics of these "anomalous liquids". Moreover, as a more essential issue, it has been demonstrated that liquids can be inhomogeneous at mesoscopic scales, even in their thermal equilibrium state. This will contribute to a greater understanding of the physics of liquids, including glass-forming liquids.
