Granular Beds: New Data
In January and March we commissioned a rapid x-ray microtomography
apparatus at the PNCCAT beamline. (more info later)
Granular Beds
Shown below is a slice-by-slice movie moving through a granular bed. The
grains are 60micron diameter glass beads.
Fossil Tooth
A crocodilian tooth from the Regina CA site (collaborator:Jim Seigwarth,
NIST)
Granular Beds: Old tomography August 1998
At a recent beamrum at the PNC-CAT sector at the Advanced Photon Source,
we performed proof-of-principle x-ray imaging and tomography measurements
of a simple granular bed consisting of 0.8mm soda-lime glass beads in a
3.2mm kapton-walled tube. The images below are (1) an edge-enhanced 2-d
transmission image, and (2) a sequence of four tomographic slices at
heights spaced by about 0.2mm. The faint white circle bounding the region
with glass beads is the kapton tube, the larger dark circle is an artifact
of the inversion software.
Investigators:Seidler, Zaranek, Behne, Chapman, Beerman, Brewe, Kim.
Last updated 9Sept98 -- GTSeidler