Raman Scattering Due to Localized Lattice Vibrations in LiD:H

The local mode due to an isotopic impurity is used to study indirectly the lattice dynamics of the perfect crystal. Raman scattering gives twice the local mode frequency due to ${\mathrm{H}}^{-}$ in LiD as 1879 ${\mathrm{cm}}^{-1\mathrm{}}$ which is in very good agreement with the calculated value of 1834 ${\mathrm{cm}}^{-1\mathrm{}}$. The good agreement can be considered as a measure of the realistic nature of the model used for the lattice dynamics of the perfect crystal.