Collective dynamics of fluid Argon in the supercritical regime
We propose to measure the dynamic structure factor of fluid Ar in the supercritical regime along two isotherms, namely 295 K and 250 K, and for pressures between 0.1 and 3 kbar. We want to verify the correlation between the appearance of the positive sound dispersion (the difference between the unrelaxed and the hydrodynamic value of the longitudinal sound velocity) and the crossing of the Widom line recently observed by MD simulations (G. Simeoni, et al., Nature Phys. 6 (7), 503 (2010)).
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Federico Aiace Gorelli; BOVE Livia Eleonora; FORMISANO Ferdinando; KOZA Michael Marek; Mario Santoro and SCOPIGNO Tullio. (2016). Collective dynamics of fluid Argon in the supercritical regime. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-01-330
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