High resolution and structure of the dislocation core

Models based on elastic continum theory or solids state physics are used to describe defects in crystals. But their applications are often restricted. It is of great interest to obtain some direct information about the real structure of defects such as dislocations. Diffuse scattering of X rays, neutrons and elecrons is often used. High resolution electron microscopy gives an image of the atomic columns around the dislocation core. Structural information can be deduced from carefull image interpretation