The Radiolysis of AmVI Solutions

Bruce J. Mincher

关键词: americium;    radiolysis;    redox chemistry;   

DOI  :  10.2172/1097145
RP-ID  :  INL/EXT-13-29484
PID  :  OSTI ID: 1097145

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

The reduction of bismuthate-produced AmVI by 60Co gamma-rays was measured using post-irradiation UV/Vis spectroscopy. The reduction of AmVI by radiolysis was rapid, producing AmV as the sole product. Relatively low absorbed doses in the ~0.3 kGy range quantitatively reduced a solution of 2.5 x 10-4 M AmVI. The addition of bismuthate to samples during irradiation did not appear to protect AmVI from radiolytic reduction during these experiments. It was also shown here that AmV is very stable toward radiation. The quantitative reduction of the AmVI concentration here corresponds to 1.4 hours of exposure to a process solution, however the actual americium concentrations will be higher and the expected contact times short when using centrifugal contactors. Thus, the reduction rate found in these initial experiments may not be excessive.