alpha particle; helium nucleus (radiation, emission)
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Introduction
A charged particle consisting of 2 neutrons & 2 protons (charge = 2e+) emitted during nuclear decay of heavy elements (atomic # >= 82). It is identical to the helium nucleus.
More general terms
Additional terms
References
- ↑ Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999