Gamma rays

Gamma Rays are a type of high energy Electromagnetic Electromagnetic spectrum in the form of Photons which have no mass.

gamma rays: Gamma rays are high-energy electromagnetic radiation (photons) emitted in an attempt by the radionuclide to become stable, i.e., radioactive decay.

Gamma Rays: Very penetrating and are best stopped or shielded by dense materials, such as lead or uranium. Gamma rays are similar to x rays.

Alpha particles, beta particles, gamma rays, x-rays, neutrons, high speed electrons, high speed protons, and other charged particles capable of producing ions.

Gamma radiation frequently accompanies alpha and beta emissions and always accompanies fission. Gamma rays are very penetrating and are best stopped or shielded against by dense materials such as lead or uranium.

The emission of alpha or beta particles or gamma rays from radioisotopes. These emitted particles can dislodge one or more electrons from atoms they strike.

Gamma rays are the most penetrating of the three common types of radiation (the other two are alpha particles and beta particles) and are best stopped by dense materials such as lead. See Alpha particle, Beta particle.

Radioactive Decay: Spontaneous change in an atom by emission of of charged particles and/or gamma rays; also known as radioactive disintegration and radioactivity.
Radioactive Substances: Substances that emit ionizing radiation.

Irradiated Food
Food that has been briefly exposed to radioactivity (usually gamma rays) to kill insects, bacteria, and mold. Irradiated food can be stored without refrigeration or chemical preservatives and has a long "shelf life."
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Food subject to brief radioactivity, usually gamma rays, to kill insects, bacteria, and mould, and to permit storage without refrigeration.
Irradiation ...

Irradiated Food: Food subject to brief radioactivity, usually gamma rays, to kill insects, bacteria, and mold, and to permit storage without refrigeration.

radioactivity - the spontaneous emission of matter or energy from the nucleus of an unstable atom (the emitted matter or energy is usually in the form of alpha or beta particles, gamma rays, or neutrons).

A traveling wave motion resulting from changing electric or magnetic fields. Types of electromagnetic radiation include x-rays, gamma rays, radar and radio waves.
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radionuclide. Any man-made or natural element which emits radiation in the form of alpha or beta particles, or as gamma rays.

See also: Radiation, Media, Environment, Exposure, Hazard