Scattering of Lattice Waves by Dislocations

Abstract

The problem of the scattering of lattice waves by the static strain field of dislocations has been treated by means of the Green’s function method. The calculation starts from the force constant model like that of Carruthers, the relaxation time obtained is, however, about one hundredth of that evaluated by him. For the case of longitudinal waves scattered by edge dislocations in alkali halides, MgO, Cu and Ge, the scattering cross sections calculated by the present theory exhibit fairly better agreement with the experimental results as compared with those calculated by Klemens and Carruthers.