Cascades of atom collisions in metals

The experimental results are presented of autoionmicroscopy and electron-microscopy (with a transmission microscope) of radiation damages induced in tungsten by cascades of atomic collisions at energies ranging from 1 to 1000 keV. The data obtained are compared to the experimental results published elsewhere. The applicability of various theoretical models of radiation damages induced in metals by cascades of atomic collisions have been checked. A method has been devised for predicting the number and distribution of defects at various energies of initially displaced atoms and different temperatures of irradiation. The results of study may be used for the estimation of radiation resistance of structural materials intended for thermonuclear devices or nuclear power plasnts, a well as for the determination of material quality following ion implantation