gamma ray

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Related to Gamma photon: Gamma rays, gamma emission, Gamma particle

gamma ray

[′gam·ə ‚rā]
(nuclear physics)
A high-energy photon, especially as emitted by a nucleus in a transition between two energy levels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Positron Emission Tomography (PET) is an imaging technique which detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide introduced into the body.1 Hence, a radioisotope which undergoes positron emission decay (PET) emits a positron that encounters with an electron, producing a pair of gamma photons moving in opposite directions.
The detector for soil scattered gamma photons is located on the bottom of gauge, 10 cm from the source, and consists of a GM tube for the detection of a wide band of scattered gamma ray energies.