Abstract
AbstractThe influence of thermally excited vibrations on vibronic spectra (absorption, CARS excitation profile and resonance background) has been modelled for polyatomic molecules in solution. It is shown that for a model describing some polymethine compounds, the spectra depend only slightly on temperature except in the case of a resonance background and an excitation profile of vibrations with a relatively high value of the origin shift parameter (Δ > 1). The investigations of low‐frequency vibrations by resonance CARS to giving information about some molecular parameters is proposed.
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