Electron microscopic observation of neutron-irradiated germanium

Abstract

Single crystals of germanium irradiated with fast neutrons have been studied by means of transmission electron microscopy. Observation of the irradiated specimens reveals defects which have a size distribution with a tail extending to larger sizes and a most probable diameter of 38 Å. The contrast of the defects was found to depend on the diffraction conditions and suggests that the defects are associated with a strain field.