The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime

Figure 11

The longitudinal reduced modulus measured by IXS [14] as a function of and at the values indicated in the legend. For each curve, the center of the viscoelastic crossover, , is indicated by a vertical arrow as in Figure 9. The straight lines used for the interpolation of the viscoelastic crossover positions are reported (solid lines) together with the curve corresponding to error (dashed line).