Transmutation of 99Tc as a new source of stable ruthenium

Dynamic of 99Tc transmutation by irradiation through thermal neutrons with the spectrum tension of 0.3 is calculated and the 100,101,102Ru yield and its volumetric distribution in targets of various thickness are determined. It is shown that after the targets irradiation of metallic 99Tc of 0.5 mm thick through thermal fluence about (5-10)x1022 cm-2 the 100,101,102Ru yield reaches its maximum-about 97.5-99% of all the target nuclei. For industrial Ru application the actinide content in the targets should not exceed 5x10-10 g/g 99Tc and the content of nonburnt 99Tc after the reprocessing of the irradiated target should be less than 10-5 g/g Ru