Involves beta particles, which are either electrons (beta-minus decay) or positrons (beta-plus decay). Beta particles are lighter than alpha particles and can penetrate farther into matter, but can still be stopped by thick layers of material.
Involves beta particles, which are either electrons (beta-minus decay) or positrons (beta-plus decay). Beta particles are lighter than alpha particles and can penetrate farther into matter, but can still be stopped by thick layers of material.