NEUTRON INELASTIC-SCATTERING FROM MOLECULAR LIQUIDS AND GLASSES

An overview of recent results on the high-frequency collective atomic motions in disordered molecular systems (liquids and glasses) is prese nted. The main emphasis is on the comparison of neutron scattering and computer simulation results which enables the unambiguous identificat ion of the relevant dynamic processes. A brief account regarding the t heoretical modeling of spectral lineshapes is also given, and applicat ions to several specific cases are described in order to illustrate th e capabilities of coherent inelastic neutron scattering for obtaining reliable information about the collective dynamics of these systems at microscopic time and length scales.