Use of charged particle accelerators for imitation and study of irradiation influence on mechanical properties of nuclear and thermonuclear reactor materials

Nuclear and physical aspects of imitation studies in radiation material science using proton beams with the energy up to 100 MeV are analysed. Energy dependence of defect formation total cross section in iron (as well as its elastic and inelastic channels) are calculated. Levels of element-transmutant generation and energy dependence of their concentration in Fe, Cr, Ni targets at proton fluence Fp=6,25x1021 p/cm2 are estimated. Radiation heating of targets and maximal rate of defect formation resulting from proton irradiation of steel assembly samples cooled by water, air, helium and liquid sodium are calculated. Level of induced activity in Fe, Cr, Ni targets is determined. 33 refs.; 20 figs.; 6 tables. (author)