Review Article
The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime
Figure 6
(a) Comparison between the dispersion curves of the “fast sound” mode as determined by INS [27] (red dots) and IXS [9] (black dots). The linear best fit of IXS data is also reported for reference as a dashed straight line. (b) A typical raw spectrum (open circles) measured by IXS [12] at nm−1 (open circles) along with its best fitting of the total line-shape (black line), the quasielastic contribution (red line), and the low (green line) and the high (blue line) frequency inelastic modes.
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