Chapter 80 X-Ray Imaging of Phonon Interaction with Dislocations

摘要: Publisher Summary X-ray images that were taken from LiNbO 3 crystals excited by surface acoustic waves revealed significant distortions of wave fronts in the vicinity dislocation lines. This chapter presents relevant background theory dislocations (with a focus on their dynamics) and comprises survey experimental methods theoretical models for studying interaction with phonons. The these are related to dynamic deformation field vibrating string. A model developed enabled simulate overall displacement field, which is combination fields dislocations. By comparing simulated images, amplitudes velocities individual determined. Dislocations can reach “relativistic” (close speed shear bulk waves) under subtle strains generated waves. because low viscosity motion , being at least two orders magnitude lower than any value measured until present all previously investigated materials. discusses principles stroboscopic imaging