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| | Gamma ray Summary |
 | | Gamma rays, such as those emitted from the unstable nuclei of cobalt-60 and cesium-137, are used in industry to assess the metallurgical integrity of, for example, pipes, girders, and turbine blades. |
 | | Gamma rays with energy close to a resonance energy, however, may also be absorbed and emitted, leading to a peak with nonzero width in the measured spectrum. |
 | | Gamma rays are emitted by cosmic sources or by radioactive decay of atomic nuclei which occurs during nuclear reactions or the detonation of nuclear weapons. |
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