| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1569498 | Journal of Nuclear Materials | 2007 | 7 Pages |
Abstract
Within the EFTTRA-T4 project a MgAl2O4 based inert matrix fuel for 241Am transmutation was produced in 1996. Am L3-edge EXAFS of the annealed material indicate that Am is present as AmAlO3. During 10 years of storage the material accumulated self-irradiation damage and no AmAlO3 X-ray diffraction features can be observed, indicating amorphization of the aged material by the corresponding cumulative α-damage of 2.9 × 1019 g−1 AmAlO3. The Am L3-edge EXAFS of the amorphous AmAlO3 shows that structural order is limited to the first oxygen shell around Am, where the rhombohedral splitting in three sub-shells is still present. Evidence for a single Al atom in the next shell is found at an Am–Al distance of 3.28 Å.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
M. Walter, J. Somers, A. Fernandez, D. Haas, K. Dardenne, M.A. Denecke,