For nonlinear X2Y molecules, an expression for the transformed polarizability operator is obtained with an accuracy of up to the second order of the theory of perturbation. This operator is applied to the calculation of the intensities of Raman lines of the H2O molecule. The corrections to the polarizability of the molecule associated with the vibrational-rotational interaction are shown to considerably change the integral intensity of a pure rotational band. The dependence of the average polarizability of the molecule on the vibrational quantum number V2, describing deformation vibrations, is estimated.
|Number of pages||7|
|Journal||Optics and Spectroscopy (English translation of Optika i Spektroskopiya)|
|Publication status||Published - Jul 2004|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics