Alpha Particle

2 topics · 2 sources

Nuclear Physics

A positively charged particle, indistinguishable from a helium atom nucleus and consisting of two protons and two neutrons.

National Tritium Labeling Facility (NTLF) at Lawrence Berkeley National Laboratory (LBNL) — Environmental Health Risk Assessment for Tritium Released at the National Tritium Labeling Facility (NTLF) at Lawrence Berkeley National Laboratory (LBNL) retrieved 2014-05-20

Technology

Defense

A particle emitted spontaneously from the nuclei of some radioactive elements. It is identical to a helium nucleus, having a mass of four units and a charge of positive two.

DoD Missile Defense Agency — MDA Glossary