Abstract
Temperature-dependent molecular dynamics of CS 2 liquid are examined in femtosecond time-resolved impulsive stimulated scattering experiments. At temperatures T⩽ 240 K, weakly oscillatory time-dependent responses are observed. These are interpreted in terms of librations of molecules about their local potential minima. The librations undergo rapid inhomogeneous dephasing. Temperature-dependent values of the configuration-averaged librational frequency and the extent of inhomogeneity in that frequency are determined.
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