alpha decay








noun Physics.

  1. a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two.

noun

  1. the radioactive decay process resulting in emission of alpha particles

  1. The radioactive decay of an atomic nucleus by emission of an alpha particle (two protons bound to two neutrons). When an element undergoes alpha decay, its atomic number decreases by two.

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