Neutron Imaging

Neutron imaging is a non-destructive technique that is similar to x-ray imaging. However, the information obtained is complementary since neutrons are more sensitive to lower Z (lighter) elements as Hydrogen, Oxygen, Carbon, etc. In addition to this, neutrons can penetrate several cm of metal, which are therefore an ideal tool to investigate samples in complex sample environments. This difference is illustrated in the figure on the right, comparing the absorption coefficients for neutrons and x-rays.
Traditional Neutron Radiography provides information on the total attenuation integrated over the path of the neutrons through the material and provides a two-dimensional image. Neutron Tomography is based on radiography but provides a three-dimensional picture of the sample, similar to a medical CAT-scan.

Attenuation Coefficients for Neutrons and X-rays