Abstract
Computer simulations are used to study the rearrangements of hydrogen-bonded structures of water upon transition to the supercritical state. It is shown that the destruction of the infinite hydrogen-bonded cluster, i.e., crossing the percolation threshold occurs in the subcritical region and that, at the critical temperature, structural variations reach the point where the fluid acquires the properties of a system with two types of ordering. The existence of tetrahedral clusters in supercritical water is confirmed only at high pressure.
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Original Russian Text © V.E. Petrenko, D.L. Gurina, M.L. Antipova, 2012, published in Sverkhkriticheskie Flyuidy: Teoriya i Praktika, 2012, Vol. 7, No. 2, pp. 55–66.
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Petrenko, V.E., Gurina, D.L. & Antipova, M.L. Structure of supercritical water: The concept of critical isotherm as a percolation threshold. Russ. J. Phys. Chem. B 6, 899–906 (2012). https://doi.org/10.1134/S1990793112080155
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DOI: https://doi.org/10.1134/S1990793112080155