Neutron Radiography is a kind of nondestructive assessment that uses a particular kind of particulate radiation, called neutrons, to form a radiographic picture of a test piece. The geometric principles of shadow formation, variation of attenuation with test-piece thickness, and lots of other elements that govern the exposure and processing of neutron radiograph are similar to those for radiography utilizing X-rays or gamma rays.
Neutron Radiography Imaging
Neutrons are subatomic particles that are defined by fairly big mass and a neutral electric charge. The attenuation of neutrons varies from the attenuation of X-rays because the procedures of attenuation are nuclear rather than ones that depend upon interaction with electron shells surrounding the nucleus.
Using neutrons, it is possible to radiographically detect certain isotopes– for instance, particular isotopes of hydrogen, cadmium or uranium. Some neutron-image-detection methods are insensitive to gamma rays or X-rays, and can be used to inspect radioactive products such as reactor fuel components. The high attenuation of hydrogen in particular, opens numerous application possibilities, including examination of assemblies for detection of adhesives, explosives, lubes, water, deterioration, plastic or rubber.
Picture Source: Neutron Radiography
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