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Department of Earth Sciences

Research Staff

Publication details for Dr Katherine Dobson

Kaestner, A. P., Trtik, P., Zarebandkouki, M., Kazantsev, D., Snehota, M., Dobson, K. J. & Lehmann, E. H. (2016). Recent developments in neutron imaging with applications for porous media research. Solid Earth 7(5): 1281-1292.

Author(s) from Durham

Abstract

Computed tomography has become a routine
method for probing processes in porous media, and the use
of neutron imaging is especially suited to the study of the
dynamics of hydrogenous fluids, and of fluids in a highdensity
matrix. In this paper we give an overview of recent
developments in both instrumentation and methodology at
the neutron imaging facilities NEUTRA and ICON at the
Paul Scherrer Institut. Increased acquisition rates coupled to
new reconstruction techniques improve the information output
for fewer projection data, which leads to higher volume
acquisition rates. Together, these developments yield signifi-
cantly higher spatial and temporal resolutions, making it possible
to capture finer details in the spatial distribution of the
fluid, and to increase the acquisition rate of 3-D CT volumes.
The ability to add a second imaging modality, e.g., X-ray
tomography, further enhances the feature and process information
that can be collected, and these features are ideal for
dynamic experiments of fluid distribution in porous media.
We demonstrate the performance for a selection of experiments
carried out at our neutron imaging instruments.