Vibrational dephasing in liquid SiH4

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Abstract
The Raman spectrum of the v 1 band of SiH4 in the liquid phase has been obtained as a function of temperature. The band profile has been Fourier transformed to provide vibrational-autocorrelation and memory functions. These functions have been analysed by a memory-function modelling procedure and by an autoregressive analysis. The lorentzian and gaussian bandwidths obtained from a Voigt-profile analysis are compared with the bandwidths calculated using a hard-sphere, binary-collision theory.