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Investigations of vibronic transitions by resonance CARS
Author(s) -
Kircheva P. P.,
Simeonov S. D.
Publication year - 1990
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250210111
Subject(s) - resonance (particle physics) , excitation , vibronic spectroscopy , polyatomic ion , excited state , spectral line , chemistry , raman spectroscopy , vibration , molecule , atomic physics , molecular vibration , molecular physics , physics , optics , quantum mechanics , organic chemistry
The 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.