Neutron radiography is a complementary method to the conventional X-ray imaging because different materials have a different attenuation behaviour with neutron beam passing through a sample than with X-rays.
Both Neutron and X-ray screens can be easily exchanged to deliver co-registered information about the composition and structure of the sample imaged with these two modalities.
Neutron diffraction is a form of elastic scattering where the neutrons exiting the experiment have the same energy as the incident neutrons.
The technique is similar to X-ray diffraction, but the different type of radiation gives complementary information. A sample to be examined is placed in a beam of thermal or cold neutrons and the intensity pattern around the sample gives information of the structure of the material.