Dependence of yield of radiation-induced defects and their energy capacity on initial-state density

Abstract

Experimental dependences are obtained for the yield and energy capacity of defect formation on the densities of the initial states. It turns out that for fixed proton energy, a) the energy capacity of the defects decreases down to ε₀ = 500 eV/def; b) the energy yield increases practically linearly and is saturated at a specific energy capacity of 2.5·10²⁰ eV/cm³. It is demonstrated that these conclusions directly follow from the symmetry of a given integral transformation of the radial distribution of the excitation density in the track ρ_E (r) into the radial distribution of the concentration of radiation-induced defects n_E (r).