论文标题
超临界Co $ _2 $中结构跨界的实验和建模证据
Experimental and modelling evidence for structural crossover in supercritical CO$_2$
论文作者
论文摘要
与亚临界液体相比，超临界状态的物理学的程度要小得多。特别是对二氧化碳的研究，但对其相图的超临界部分知之甚少。在这里，我们结合了中子散射实验和分子动力学模拟，并在Frenkel系列中证明了结构交叉。在压力高达临界压力的14倍的压力下，交叉的变化是结构因子和配对分布函数的主要特征的变化所证明的。
Physics of supercritical state is understood to a much lesser degree compared to subcritical liquids. Carbon dioxide in particular has been intensely studied, yet little is known about the supercritical part of its phase diagram. Here, we combine neutron scattering experiments and molecular dynamics simulations and demonstrate the structural crossover at the Frenkel line. The crossover is seen at pressures as high as 14 times the critical pressure and is evidenced by changes of the main features of the structure factor and pair distribution functions.
