Radiation-induced Decomposition of U(VI) Phases to Nanocrystals of UO(2).

Utxunomiya, S. ; Eing, R. C. ; Wang, L. M.

Technical Information Center Oak Ridge Tennessee

关键词: Radiation effects;    Uraninites;    Nanocrystals;    Actinides;    Atoms;   

RP-ID  :  DE2006859061

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

U(sup 6+)-phases are common alteration products under oxidizing conditions, of uraninite and the UO(sub 2) in spent nuclear fuel. These U(sup 6+)-phases are subjected to a radiation field caused by the (alpha)-decay of U, or in the case of spent nuclear fuel, incorporated actinides, such as (sup 239)Pu and (sup 237)Np. In order to evaluate the effects of (alpha)-decay events on the stability of the U(sup 6+)-phases, we report, for the first time, the results of ion beams irradiations (1.0 MeV Kr (sup 2+)) of U(sup 6+)-phases. The heavy particle irradiations are used to stimulate the ballistic interactions of the recoil-nucleus of an (alpha)-decay event with the surrounding structure.