Alphas, Betas and Gammas

Alpha particles are doubly ionized Helium nuclei 4He++
Beta particles are either electrons (e-) or their anti-particles, positrons (e+)
Gamma rays are the most energetic type of light – they are not particles at all!
Alphas, beta and gammas are often emitted by radioactive decay of unstable nuclei
Example: 3H à 3He + ?

Alpha particles are doubly ionized Helium nuclei 4He++