The effect of disorder on the Raman spectra of glasses

Abstract

The effect of structural disorder on the first-order Raman scattering in glasses is studied by perturbation series approximations to the averaged Green function of an appropriately chosen model system. The proposed theoretical approach is applied to calculating the Raman spectra of Na2O-SiO2 glass systems on the basis of the disorder-modified spectrum of a Si2O7 dimer.