REGULARITIES IN RADIATION DEFECT ACCUMULATION

The approach based on the similarity theory is used to analyze the kno wn experimental data on radiation swelling of metals under various irr adiation conditions. The evolution of swelling in a wide range of radi ation damage satisfies to the self-similarity conditions. The kinetic swelling diagrams relating the swelling rate as a function of irradiat ion dose to the established dimensionless parameters that characterize radiation resistance under the influence of different factors are sug gested for analysis of radiation damage processes. The mid-sections of these diagrams are described by the power-law relationships with the exponents depending on experimental conditions. The threshold and maxi mum values of radiation resistance are separated. which. as well Lu: t he exponents determining the intensity of radiation defect accumulatio n, can be used to compare various materials and select the material of highest radiation resistance.