ON A POSSIBILITY OF OBTAINING AN EXPRESSION FOR THE RAMAN-SCATTERING TENSOR

It is shown than the Raman scattering tensor can be represented in the form of a sum of a matrix element of the Rayleigh scattering tensor f or a molecule with fixed nuclei and correction terms whose inclusion m akes it possible to describe the effects associated with an asymmetry of the Raman scattering tensor and calculate intensities of Raman line s in a wide range of frequencies of exciting light, including the near -resonance region. The matrix element of the Rayleigh scattering tenso r was found to include both the Herzberg-Teller and the Franck-Condon terms of the Rayleigh scattering tensor, which have substantially diff erent dependences on the frequency of exciting light. We managed to se parate out in this matrix element a static part, which is determined b y the polarizability tensor of a molecule, and series rapidly convergi ng in excited electronic states and describing the dependences of the Herzberg-Teller and the Franck-Condon terms of the Rayleigh scattering tensor on the frequency of the incident light.