Glossary of Scientific Terms

Alpha Decay

Previous Term

(Alpha Decay)

Glossary Main Index

Next Term

(Atomic Number)

Atomic Number

Alpha Particle

alphaparticle.gif

Produced during alpha decay, an alpha particle is a fast moving helium  nucleus. Alpha particles carry a charge of +2 and strongly interact with matter. They travel only a few inches through air and can easily be stopped with a sheet of paper.