[en] Complete text of publication follows. Experimental data on the spatial distribution of the energy deposited around an energetic heavy ion, from 1 MeV protons to 5.9 MeV/n uranium ions, which have been reported in the literature were documented to obtain a scaled radial dose distribution: (β/Z^*)² D(Z^*, β, t) = 200 for t = 0-1; = 200/t² for t = 1-t_c; = 200 t_c/t³ for t>t_c where Z^* and β are the effective charge and velocity relative to c, the velocity of light, of the incident ion, respectively, D the dose in unit of Gy, t the radial distance in unit of nm, t_c the critical distance empirically determined. Then, if we know the yield of any chemical reaction as a function of dose from the results of experiments using γ-radiations or fast electrons, we can calculate the probability for the yield of the chemical reaction in the system bombarded with a heavy ion of the effective charge Z^* and velocity β. The results of the calculation of the LET-values and of G(Fe³⁺) in the 1 mM ferrous sulfate acidic solution will be presented