Radiolysis of actinides and technetium in alkaline media

摘要

The (gamma)-radiolysis of aerated alkaline aqueous solutions of Np(V), Np(VI), Pu(VI), Tc(IV), Tc(V), and TC(VII) was studied in the absence of additives and in the presence of CO(sub 3)(sup 2-), NO(sub 3)(sup -), NO(sub 2) (sup -), EDTA, formate, and other organic compounds. The radiolytic reduction of Np(V), Np(VI), Pu(VI), and TC(VII) under different experimental conditions was examined in detail. The addition of EDTA, formate, and alcohols was found to considerably increase the radiation-chemical reduction yields. The formation of the Np(V) peroxo complex was observed in the (gamma)-radiolysis of alkaline aqueous solutions of Np (VI) in the presence of nitrate.