This unit provides the appropriate structure to mount an image intensifier and an X-ray tube with a beam limiting device positioned directly opposite from and aligned centrally to each other.
2.
For industrial radiography using gamma radiation sources such as iridium-192 or cobalt-60, a collimator ( beam limiting device ) allows the radiographer to control the exposure of radiation to expose a film and create a radiograph, to inspect materials for defects.
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