neutronitomografiaa

Neutron tomography is a non-destructive imaging technique that utilizes neutrons to probe the internal structure of materials. Similar to X-ray tomography, it generates cross-sectional images by measuring how neutrons are attenuated as they pass through an object. However, neutrons interact with matter differently than X-rays, making neutron tomography particularly useful for imaging light elements like hydrogen, lithium, and boron, as well as distinguishing between isotopes. It is also highly sensitive to materials with a large neutron absorption cross-section, such as cadmium or gadolinium, which can be difficult to visualize with X-rays.

The process involves placing a sample in a neutron beam, typically from a nuclear reactor or a spallation source. Detectors are positioned on the opposite side of the sample to record the transmitted neutron intensity. The sample is then rotated, and multiple projections are acquired at different angles. Sophisticated reconstruction algorithms, similar to those used in medical CT scans, are applied to these projections to create a 3D map of the neutron attenuation coefficients within the object.

Neutron tomography finds applications in various fields, including materials science for examining composite materials, polymers, and metals; nuclear engineering for inspecting fuel rods and reactor components; archaeology for analyzing artifacts without damage; and security for detecting contraband. Its ability to penetrate dense materials and its sensitivity to specific elements make it a valuable tool for research and industrial inspection where conventional methods are insufficient.