testing

Non-destructive tests and tests

X-ray and gamma tests and tests
Radiation emitted by a source passes through the room and interacts with it before being collected by a detector device

By Excitement
The X and gamma rays used are of the electromagnetic type. They are called ionizing because of their ability to act on the matter and to create electric charges.

By X-rays.
Practically, to create X-rays, a device is used where electrons are accelerated under a large potential difference (between 20 000 and 400 000 kV in the usual equipment) that hit a tungsten target.
This acceleration voltage (in kV) as well as the electron flux (ie the beam current) serve to characterize an equipment.

By gamma rays.
Radioactivity is the manifestation of a transformation of the atomic nucleus which, by losing some of its constituents, disintegrates.
This results in an emission of particles α (helium nuclei) and β (electrons) rapidly arrested by the material, and electromagnetic radiation γ. Radiation is characterized by its period and its energy.
Radioactive events follow statistical laws. There is in particular a decay that is quantified by means of a parameter called "period", time necessary for the return to the stable state of half of the radioactive atoms at a given moment.

Radiodétectabilité

Share by: