COMPOSITION FOR LONG-TERM STORAGE OF TRANSURANIUM ELEMENTS Russian patent published in 2014 - IPC G21F9/00 

FIELD: physics.

SUBSTANCE: oxides of transuranium elements are mixed with palladium metal powder in the following ratio, wt %: oxides of transuranium elements - 30-70, palladium metal - 70-30, and the obtained mixture is pressed. As a result, a composition for long-term storage of transuranium elements is obtained, which includes oxides of transuranium elements in palladium metal, which provides high chemical stability of the material, safety during indefinite storage, while preserving the capacity to extract transplutonium elements after dissolving the disclosed composition in nitric acid. The invention proposes the use of industrial ("reactor") palladium, which is a nuclear fuel fission product, to produce the disclosed composition.

EFFECT: prolonged and reliable isolation of transuranium elements and preserving the capacity for extraction and use thereof in future, or for further processing using a transmutation process.

2 cl, 2 tbl