What is annihilation? - Particle Physics - A Level Physics
Annihilation is a process in particle physics where a particle collides with its corresponding antiparticle, resulting in the conversion of their mass into energy. This energy is typically released in the form of gamma-ray photons.
For example, when an electron meets a positron (its positively charged antiparticle), they annihilate each other, producing gamma-ray photons.
This process is a demonstration of the principle of mass-energy equivalence described by Einstein's equation E=mc^2, where the mass of the particles is transformed into energy.
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