To calculate voxel absorption:
Total voxel absorption=total attenuation at given x-ray energy(cm^2/g) *voxel size(cm)* density of material(g/cm^3)
Total attenuation will be found in Nist/Xcom
Similarly, Transmission can be evaluated with Total attenuation.
Transmission is recommended more than 20%.
Regarding our reachable monochromatic x-ray energy range(10keV-60keV), elemental distribution can be studied in 3D.
Interferometry imaging has been performed at 38keV.
X-ray Tomography Beamline
The J. Bennett Johnston, Sr.
Center for Advanced Microstructures & Devices
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