1) Alpha radiation (α): Alpha particles are made of two protons and two neutrons, which are the same particles that make up the nucleus of a helium atom. Alpha particles have a positive charge and are the least penetrating type of radiation.

2) Beta radiation (β): Beta particles are high-energy electrons or positrons (anti-electrons) that are emitted from the nucleus of an atom during radioactive decay. Beta particles are negatively or positively charged and can travel longer distances than alpha particles.

3) Gamma radiation (γ): Gamma rays are a type of electromagnetic radiation, like X-rays, but with higher energy. Gamma rays have no charge and are the most penetrating type of radiation.