XAFS and LIBD investigation of the formation and structure of colloidal Pu(IV) hydrolysis products |
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| Authors: | Rothe Jörg Walther Clemens Denecke Melissa A Fanghänel Th |
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| Affiliation: | Institut für Nukleare Entsorgung, Forschungszentrum Karlsruhe, Postfach 3640, D-76021 Karlsruhe, Germany. |
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| Abstract: | Pu(IV) oxyhydroxide colloid growth is investigated with XAFS and LIBD. From combined results a model of colloid formation is proposed, which leads to a face-centered cubic Pu sublattice having cation defects, as observed with EXAFS, and a linear dependency of log [Pu(IV)] on -log [H+] with slope -2, in accord with LIBD. The solubility for Pu(IV) measured with LIBD is close to the lower limit of the solubility curve from previously reported data. |
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