Transition in fluctuation behaviour of normal liquids under high pressures
Eugene B. Postnikov and
Mirosław Chora̧żewski
Physica A: Statistical Mechanics and its Applications, 2016, vol. 449, issue C, 275-280
Abstract:
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.
Keywords: Volume fluctuations; Compressibility; Random packing (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:449:y:2016:i:c:p:275-280
DOI: 10.1016/j.physa.2015.12.129
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