arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.00526cond-mat.stat-mechcond-mat.otherphysics.chem-ph
收藏

高压下正常液体波动行为的转变

Transition in fluctuation behaviour of normal liquids under high pressures

Eugene B. Postnikov, Mirosław Chorążewski

摘要:

以α,ω-二溴代烷烃为例,探讨了密度涨落和等压膨胀系数的逆行为.两种不同的状态揭示远离临界点:共存曲线附近的指数衰减波动的区域和状态下足够高的压力下的较长的相关性。等压膨胀系数等温线的交叉发生在上述转变的PVT范围内。我们讨论了这种交叉的相互作用与分子堆积结构的变化与分析功能的密度,这代表了反向减少体积波动。

英文摘要:

We explore the behaviour of the inverse reduced density fluctuations and the isobaric expansion coefficient using α,ω-dibromoalkanes as an example. Two different states are revealed far from the critical point: the region of exponentially decaying fluctuations near the coexistence curve and the state with longer correlations under sufficiently high pressures. The crossing of the isotherms of the isobaric expansion coefficient occurs within the PVT range of the mentioned transition. We discuss the interplay of this crossing with the changes in molecular packing structure connected with the analysed function of the density, which represents inverse reduced volume fluctuations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑