Beta decay
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In nuclear physics, beta decay is a type of radioactive decay in which an atomic nucleus emits a beta particle, transforming into an isobar of that nuclide. For example, beta decay of a neutron transf
Energy-level diagrams depicting nuclear transitions involving beta decay.
A beta spectrum, showing a typical division of energy between electron and antineutrino
Beta spectrum of 210Bi. Emax = Q = 1.16 MeV is the maximum energy
Positron
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The positron or antielectron is the particle with an electric charge of +1e, a spin of 1/2 ħ, and the same mass as an electron. It is the antiparticle of the electron. When a positron collides with an
Beta decay
…In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied…
Wilson cloud chambers used to be very important particle detectors in the early days of particle physics. They were used in the discovery of the positron, muon, and kaon.