Neutron tomography

Computer tomography is used to map the three-dimensional distribution of neutron attenuation coefficients within an object. This allows visualization of the inner structure of industrial, biological, and geological structures. Neutron tomography creates a three dimensional image of a sample by reconstructing a series of radiographs as the sample is rotated through 180^O. It is similar to MRI and CT procedures used in the medical field.

We have reconstructed O-rings used in sealing joints to determine possible flaws in the inner material caused by their fabrication process.

Three-dimensional reconstruction of a kinked O-ring.

Researchers at UC Davis and JPL have seen significant promise in the use of Neutron Tomography in the reconstructing of 3-D distribution of organics in rocks that may evolve to astrobiological applications.

Negev Desert sample
Sample courtesy of Sasha Tsapin
		Neutron film radiograph
Slice from neutron CT reconstruction		Reconstructed sample
Reconstructed sample: Isosurfaces
X-ray CT results		Neutron CT results
* X-ray image courtesy of Sasha Tsapin and Rho Bhartia

You can read the project summary here.

Other Information Resources

NDE Techniques for Inspection of Pyrovalve Seals

Reactor reveals hidden life in rocks