M A Denecke et al 2009 J. Phys.: Conf. Ser. 190 012187 doi:10.1088/1742-6596/190/1/012187
M A Denecke1,4, P Michel1, T Schäfer1, F Huber1, K Rickers2, J Rothe1, K Dardenne1, B Brendebach1, T Vitova1 and M Elie3
Show affiliationsCombined spatially resolved hard X-ray μ-XRF and μ-XAFS studies using an X-ray beam with micrometer dimensions at the INE-Beamline for actinide research at ANKA and Beamline L at HASYLAB with those from scanning transmission soft X-ray microscopy (STXM) and synchrotron-based Fourier transform infrared microspectroscopy (μ-FTIR) recorded with beam spots in the nanometer range are used to study a U-rich clay originating from Autunian shales in the Permian Lodève Basin (France). This argillaceous formation is a natural U deposit associated with organic matter (bitumen). Results allow us to differentiate between possible mechanisms leading to U enrichment: likely U immobilization via reaction with organic material associated with clay mineral. Such investigations support development of reliable assessment of the long term radiological safety for proposed nuclear waste disposal sites.
78.70.Dm X-ray absorption spectra
82.80.Ej X-ray, Mössbauer, and other gamma-ray spectroscopic analysis methods
Soft matter, liquids and polymers
Issue 1 (2009)
M A Denecke et al 2009 J. Phys.: Conf. Ser. 190 012187
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