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Higher Order Speciation Effects on Plutonium L 3 X-ray Absorption Near Edge Spectra

2003; American Chemical Society; Volume: 43; Issue: 1 Linguagem: Inglês

10.1021/ic0346477

1520-510X

Steven D. Conradson, Kent D. Abney, B. D. Begg, Erik D. Brady, David L. Clark, Christophe Den Auwer, Mei Ding, Peter K. Dorhout, Francisco J. Espinosa-Faller, Pamela L. Gordon, R.G. Haire, Nancy Hess, Ryan Falcone Hess, D. Webster Keogh, Gerard H. Lander, Anthony J. Lupinetti, Luis A. Morales, Mary P. Neu, Phillip D. Palmer, Patricia Paviet-Hartmann, Sean D. Reilly, Wolfgang H. Runde, C. Drew Tait, Douglas Veirs, F. Wastin,

Rare-earth and actinide compounds

Pu L(3) X-ray near edge absorption spectra for Pu(0-VII) are reported for more than 60 chalcogenides, chlorides, hydrates, hydroxides, nitrates, carbonates, oxy-hydroxides, and other compounds both as solids and in solution, and substituted in zirconolite, perovskite, and borosilicate glass. This large database extends the known correlations between the energy and shape of these spectra from the usual association of the XANES with valence and site symmetry to higher order chemical effects. Because of the large number of compounds of these different types, a number of novel and unexpected behaviors are observed, such as effects resulting from the medium and disorder that can be as large as those from valence.