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Use of synchrotron tomographic techniques in the assessment of diffusion parameters for solute transport in groundwater flow

By M. Betson, J. Barker, Paul Barnes and T. Atkinson

Abstract

This technical note describes the use of time-resolved synchrotron radiation tomographic energy dispersive diffraction imaging (TEDDI) and tomographic X-ray fluorescence (TXRF) for examining ion diffusion in porous media. The technique is capable of tracking the diffusion of several ion species simultaneously. This is illustrated by results which compare the movement of Cs+, Ba2+ and La3+ ions from solution into a typical sample of English chalk. The results exhibited somewhat anomalous (non-Fickian) behaviour and revealed heterogeneities (in 1D) on the scale of a few millimetres

Topics: bcs
Publisher: Springer
Year: 2005
OAI identifier: oai:eprints.bbk.ac.uk.oai2:347

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