Canadian Medical Guide > Physical Sciences > Natural Sciences > Physics > Nuclear Physics > Alpha Particles Terms and Definitions
Alpha Particles
Medical Definition: | Positively charged particles composed of two protons and two neutrons, i.e., helium nuclei, emitted during disintegration of very heavy isotopes; a beam of alpha particles or an alpha ray has very strong ionizing power, but weak penetrability. |
Guide Notes: | ionizing; radiation policy: see Manual index under RADIATION & entries following |
Also Called: | Alpha Rays |
Alpha Particles Medical Definitions and Terms
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