Figure 6
From: Supercritical water anomalies in the vicinity of the Widom line
Self-diffusion coefficient of water at different isobars in respect to temperature. Based on experimental data fitting, Lamb et al.52 managed to correlate the self-diffusion coefficient with the temperature and the density using the equation D = 2.24 · 10−6 · T 0.763/ρ where D is the self-diffusion coefficient (cm2/s), T is the temperature (K) and ρ is the density (g/cm3). Yoshida et al.53 use a function based on the scaling to the hard-sphere model. The Widom points are described by filled symbols.
