key term - Alpha particles

Definition

Alpha particles are positively charged particles consisting of two protons and two neutrons emitted during certain types of radioactive decay.

Related terms

Beta particles:

These are high-energy electrons or positrons emitted during radioactive decay.

Gamma rays:

These are high-energy electromagnetic waves emitted during radioactive decay.

Radioactive decay: It is the spontaneous breakdown of an unstable atomic nucleus, resulting in the emission of particles or radiation.