The light scattering spectra of water in its normal and supercooled state were analyzed in the frequency range 0.3<ν<100 ${\mathrm{cm}}^{\mathrm{-}1}$. It is shown that using the general idea of mode-coupling theory (MCT) one can describe consistently the temperature variations of both spectra and viscosity. The critical temperature estimated in the framework of MCT, ${\mathit{T}}_{\mathit{c}}$∼220 K, is close to the well-known temperature of singularities of supercooled water. Some ideas about the relation between the critical dynamics as predicted by MCT, and the dynamics of supercooled water are discussed.

• Received 28 September 1994

DOI:https://doi.org/10.1103/PhysRevB.51.12865