X-ray Computed Micro Tomography


3D visualization of a sulfide vain with disseminated gold ©Copyright: HZDR/ Jose Godinho

3D visualization of a sulfide vein with disseminated gold

Foto: HZDR/ Jose Godinho

Download

Equipment features

CoreTOM from XRE: https://xre.be/product/coretom/

  • Large samples
  • Automated stack scans and volume of interest
  • Down to 4 micron voxel size
  • Flexible stage to mount rigs for in situ studies
  • Fast in situ scanning

Applications

  • Visualization of mineral distribution in a rock
  • Quantification and statistical analysis of the components of a material in space
  • 3D  Rendering of materials to feed into numerical models
  • Analysis of time-lapse processes inside materials

Specs

  • Energy range: 40-180 keV
  • Power: up to 300 W
  • Detector size: 2880 x 2880 (14 fps)
  • Samples up to 1 m height
  • Scans down to tens of seconds

Spectroscopic detector under development


How it works?

CT takes advantage of the penetrating nature of X-rays to image the inside of a material based on the principle that each component of a material attenuates the X-ray beam differently depending on its electron density. After passing through a sample the X rays reaching the detector reflect a projection of its components. With the projections acquired over 360 degrees it is possible to track each individual component in space, which allows to reconstruct the 3D volume of the sample. Note that the resolution is inversely proportional to the field of view. Samples < 2 cm diameter are necessary to achieve the highest resolution. Cylindrical samples are ideal but other geometries can be measured without any special treatment. The method is non-destructive.        


Links

Contact