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alpha radiation

Definitions of alpha radiation
  1. noun
    the radiation of alpha particles during radioactive decay
    synonyms: alpha ray
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    type of:
    ionizing radiation
    high-energy radiation capable of producing ionization in substances through which it passes
    corpuscular radiation, particulate radiation
    a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
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