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U.S. Department of Health & Human Services
Radiation Emergency Medical Management (REMM)

Alpha Radiation - Animation
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Animation showing nucleus simultaneously ejects two neutrons and two protons, which correspond to a helium necleus.

Replay animation

  • The unstable nucleus simultaneously ejects two neutrons and two protons, which correspond to a helium nucleus. 
  • The emission of gamma photons is a secondary reaction that occurs a few thousandths of a second after the disintegration.

 

Adapted from Radiation (Radior, IAEA, European Commission, CEPN)