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Diffusion in supercooled water to 300 MPa

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Prielmeier, F. X. ; Lang, Elmar ; Speedy, R. J. ; Lüdemann, H.-D.
Date of publication of this fulltext: 22 Oct 2010 08:01


Measurements of the self-diffusion coefficient in supercooled water to 300 MPa are reported. Translational diffusion in liquid water at 243 K is enhanced by 60% when the pressure is increased from 0.1 to 150 MPa, and rotational diffusion is enhanced by almost 250% between 0.1 and 250 MPa. These striking anomalies are interpreted in terms of the proximity of a conjectured line of spinodallike stability limits in the supercooled liquid.

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