BRAINCAKEBeta Radiation
Beta particles are fast-moving electrons or positrons from the nucleus.
A β- particle is emitted from the nucleus when a neutron decays into a proton. Beta minus decay happens when there are too many neutrons.
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Key terms in this lesson
- Antiparticle
- A particle with the same rest mass as its corresponding particle but with opposite charge and opposite values of other quantum properties.
More in Particles and Radiation
- The Strong Nuclear Force
- Forces in the Nucleus
- Radioactive Decay
- Alpha Radiation
- Gamma Radiation and Electromagnetic Waves
- The Electron Volt
- Photons
- Anti-matter
All 22 lessons in Particles and Radiation · All AQA AS-level Physics topics