Development of Thermo Chemical Stable Matrices with the Purpose Transuranium Elements Immobilization
2006
The most suitable material for actinides immobilization is the crystalline ceramics. At the same time it is very tempting to apply for synthesis of compound suitable for being used as the materials for long-term storage or final disposal, the fission products, which are abundant in irradiated fuel itself and capable of producing slightly-soluble compounds with the most hazardous nuclides. The object of this work was to conduct experimental study on synthesis matrices on the base of 'reactor' palladium for immobilization of long-lived transuranium elements (TUE) It may be suggested that the incorporation of radioactive element oxides into Pd-based matrix would allow obtaining a material of lower leach rate which would be perfectly suitable for save long-term storage. In the paper the results of experiments on synthesis of matrices with metal oxides on palladium base are presented. Physicochemical characteristics (mechanical strength, data on leach rate et alias) are also presented. Calculation of neutron physical characteristic of Pd-based matrix (from the point of view the behavior under irradiation) has been executed. (authors)
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