Moessbauer scattering from a supercooled liquid

By a coherent Moessbauer-scattering experiment, the dynamical structure factor S(k,ω) was determined for pure liquid glycerol. As a function of temperature (-300C < or = to T < or = to 00C) and momentum transfer (0.7A-1 < or = to k < or = to 4A-1) the width and intensity of the quasielastic line and the intensity of the inelastic line were measured. From the ratios of the intensities the mean-square vibrational amplitude of the molecules was derived while from the linewidth of the quasielastic part translational and rotational diffusion parameters were extracted