A particle beam is a stream of charged or neutral particles, such as electrons, protons, or ions, that are accelerated to high speeds. These beams are used in various applications, including scientific research, medical treatments, and materials processing. Particle beams can be generated using devices like particle accelerators, which create and direct the flow of particles. In medical settings, particle beams are particularly valuable in radiation therapy for treating cancer. They can precisely target tumors while minimizing damage to surrounding healthy tissue. Additionally, particle beams are utilized in nuclear physics experiments to study fundamental particles and forces in the universe.