Abstract
AbstractSynchrotron x‐rays at the Cornell High Energy Synchrotron Source (CHESS) and other available facilities provide a high‐resolution means of quantitatively studying rapid changes of fluid content in porous media. This technique is based on monitoring x‐ray absorbance changes in sand volumes traversed by an intense, highly collimated synchrotron x‐ray beam. The high intensity and brightness of synchrotron radiation permit acquisition of statistically significant x‐ray count data each second during the drying process of fingered flow. Simultaneous measurement of water pressure using tensiometers provides a reliable dynamic measurement of drying curves.
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