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Radiation Protection Glossary

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Gamma Rays
Gamma Decay (Co-60)
Gamma Rays are a type of high energy Electromagnetic Electromagnetic spectrum in the form of Photons which have no mass. In Radioactive Decay they originate from changes in the structure and energy levels of the Atomic Nucleus , or, through electron-positron annihilation or by nuclear fission Gamma rays travel greater distances than either Alpha Particles or Beta Particles and are much more difficult to shield.