The emerging role of 4D synchrotron X‐ray micro‐tomography for climate and fossil energy studies: five experiments showing the present capabilities at beamline 8.3.2 at the Advanced Light Source

• Main Authors: Voltolini, Marco, Haboub, Abdelmoula, Dou, Shan, Kwon, Tae-Hyuk, MacDowell, Alastair A, Parkinson, Dilworth Y, Ajo-Franklin, Jonathan
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: eScholarship, University of California 2017
• Subjects: Chemical Sciences; Physical Chemistry; Physical Sciences; Atomic; Molecular and Optical Physics; Condensed Matter Physics; Affordable and Clean Energy; X-ray microCT; in situ imaging; earth and energy sciences; Optical Physics; Physical Chemistry (incl. Structural); Biophysics; permafrost
• Online Access: https://escholarship.org/uc/item/36n7n4t2

Continuous improvements at X-ray imaging beamlines at synchrotron light sources have made dynamic synchrotron X-ray micro-computed tomography (SXR-µCT) experiments more routinely available to users, with a rapid increase in demand given its tremendous potential in very diverse areas. In this work a survey of five different four-dimensional SXR-µCT experiments is presented, examining five different parameters linked to the evolution of the investigated system, and tackling problems in different areas in earth sciences. SXR-µCT is used to monitor the microstructural evolution of the investigated sample with the following variables: (i) high temperature, observing in situ oil shale pyrolysis; (ii) low temperature, replicating the generation of permafrost; (iii) high pressure, to study the invasion of supercritical CO2 in deep aquifers; (iv) uniaxial stress, to monitor the closure of a fracture filled with proppant, in shale; (v)reactive flow, to observe the evolution of the hydraulic properties in a porous rock subject to dissolution. For each of these examples, it is shown how dynamic SXR-µCT was able to provide new answers to questions related to climate and energy studies, highlighting the significant opportunities opened recently by thetechnique.