Numerical calculation of elastically deposited energy by energetic heavy ions in multicomponent materials

Abstract

Based on the LSS theory, elastically deposited energy and its partition to each atomic constituent of a binary system by energetic heavy ions are numerically calculated. The target is TaO, and the projectiles are He, Be, C, O, Al, Ar, Fe, Kr, Ta, and Bi ions with energies up to 400 keV. It has been shown that the ratio of partial damage energy imparted to each atomic species to total damage energy remains constant and does not depend on the atomic species of the projectiles for the high-energy region. For intermediate and low energies, however, this ratio depends appreciably on the boundary condition, energy, and the nature of the projectiles. These results have been compared with the work of Andersen and Sigmund, and the correlation between them are discussed. A generalized relation as to the partition of damage energy in multicomponent cases is also suggested.