Drozd-Rzoska Aleksandra, Rzoska Sylwester J
Institute of High Pressure Physics Polish Academy of Sciences, ul. Sokołowska 29/37, 01-142 Warsaw, Poland.
J Chem Phys. 2016 Jun 14;144(22):224506. doi: 10.1063/1.4953616.
Results of dielectric constant (ε) studies in diethyl ether for the surrounding of the gas - liquid critical point, TC - 130 K < T < TC + 50 K, are presented. The analysis recalls the physics of critical phenomena for portraying ε (T) evolution along branches of the coexistence curve, along its diameter (d(T)) and in the supercritical domain for T > TC. For the ultrasound sonicated system, the split into coexisting phases disappeared and dielectric constant approximately followed the pattern of the diameter. This may indicate the possibility of the extension of the "supercritical technology" into the ultrasound "homogenized" subcritical domain: the "strength" and the range of the precritical effect of d(T) are ca. 10× larger than for ε (T > TC).
本文给出了在二乙醚中对气-液临界点（(T_C - 130K < T < T_C + 50K)）周围进行介电常数（(\varepsilon)）研究的结果。该分析回顾了临界现象的物理原理，以描绘沿共存曲线分支、沿其直径（(d(T))）以及在(T > T_C)的超临界区域中(\varepsilon(T))的演变。对于超声处理的系统，共存相的分裂消失，介电常数大致遵循直径的模式。这可能表明“超临界技术”扩展到超声“均质化”亚临界区域的可能性：(d(T))的“强度”和临界前效应的范围比(\varepsilon(T > T_C))大约(10)倍。
