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beta particle
(redirected from Beta particles)

    Also found in: Medical, Financial, Encyclopedia, Wikipedia 0.01 sec.
beta particle
n.
A high-speed electron or positron, especially one emitted in radioactive decay.
beta particle
n
(Physics / General Physics) a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission
beta particle
A high-speed electron or positron, usually emitted by an atomic nucleus undergoing radioactive decay. Beta particles are given off naturally by decaying neutrons in radioactive atoms and can be created in particle accelerators. Beta particles have greater speed and penetrating power than alpha particles but can be stopped by a sheet of aluminum that is 2 to 3 mm thick. See more at radioactive decay.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.beta particle - a high-speed electron or positron emitted in the decay of a radioactive isotope
subatomic particle, particle - a body having finite mass and internal structure but negligible dimensions
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DU is a heavy metal that is also slightly radioactive, emitting alpha and beta particles and gamma rays.
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