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(A) High-frequency dynamic structure factor, STOF(Q,ν), summed over all Q. Samples are 0.05 (dry), 0.18, 0.30, 0.50, and 0.80 h. (B) Light-scattering intensity, I(ν). Samples are 0.03 (dry), 0.10, 0.15, 0.20, 0.35, 0.50, 0.75, and 0.85 h. All neutron- and light-scattering spectra were obtained at T = 295 K and normalized at a high-frequency region that is not sensitive to hydration, ∼2.5 THz (∼10 meV).
