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Studying Actinide Correlations in Solution using High-Energy X-ray Scattering

Published online by Cambridge University Press:  26 February 2011

S. Skanthakumar  and
L. Soderholm
S. Skanthakumar
Affiliation:
skantha@anl.gov, Argonne Natinal Laboratory, Chemistry Division, BLDG 200/M153, Argonne, Illinois, 60439, United States, (630) 252-1754, (630) 252-4225
L. Soderholm
Affiliation:
LS@anl.gov, Argonne Natinal Laboratory, Chemistry Division, United States
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Abstract

High energy x-ray scattering (HEXS) is becoming a valuable tool for quantifying actinide coordination environments in solution. The technique is described with and exemplified by a study on Th speciation. A comparison of data from two samples with pHs of 0 and 3.4 show differences in the Th structural environment that can be attributed to Th colloid formation at the higher pH. A further comparison of the HEXS data from the colloidal sample with Th L3-edge EXAFS data on the same sample clearly demonstrates the advantage of the scattering data when looking for correlations at second-near neighbor or longer distances.

Keywords

actinidex-ray diffraction (XRD)extended x-ray absorption fine structure(EXAFS)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ05-18
Copyright
Copyright © Materials Research Society 2006

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References

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