Ranges of low and medium energy heavy ions in an amorphous substance

Theory of ion transmission in amorphous substance was elaborated with regard to the processes of elastic and inelastic braking. Inelastic braking of ions was studied in the approximation of continuous slowing-down. Elastic braking was studied with regard to discrete nature of variation of energy and direction of ion motion under elastic scattering in the target atoms. The integral equations for the total and design-basis ranges of ions were obtained. Expressions determining the probability of ion energy variation under elastic and inelastic braking were obtained. The design-basis ranges of Cu and Ga ions in Si and C made targets were calculated. The calculation results agreed well with the experiment