Abstract
The relation between the first-order Raman profile and the absorption spectrum of a scattering centre is generalized, taking into consideration the dependence of the electronic matrix elements on nuclear coordinates, i.e. the violation of Condon approximation. Employing simultaneously the Condon and non-Condon terms, their destructive interference appears in the Raman profile as an antiresonance. Depending on the sign of the non-Condon term, the antiresonance can occur on the long- or the short-wave side from the absorption maximum. This asymmetry allows the antiresonance to be distinguished from the one caused by the interference of different electronic levels, which can appear simultaneously on both sides towards the absorption maximum.
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