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A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus, known as beta decay. There are two forms of beta decay, β − decay and β + decay, which produce electrons and positrons, respectively. [2]
The beta spectrum, or distribution of energy values for the beta particles, is continuous. The total energy of the decay process is divided between the electron, the antineutrino, and the recoiling nuclide. In the figure to the right, an example of an electron with 0.40 MeV energy from the beta decay of 210 Bi is shown.
where and are semiconductor band gap and electron-hole pair creation energy respectively. The energy to generate a single EHP by a beta-particle is known to scale linearly with the bandgap as = + with A and B depending on the semiconductor characteristics. [22]
beta decay (decay energy is divided between the emitted electron and the neutrino which is emitted at the same time) alpha decay; The decay energy is the mass difference Δm between the parent and the daughter atom and particles. It is equal to the energy of radiation E.
The energy emitted depends on the isotope that is decaying; the figure of 0.96 MeV applies only to the decay of carbon-11. The short-lived positron emitting isotopes 11 C (T 1 ⁄ 2 = 20.4 min ), 13 N (T 1 ⁄ 2 = 10 min ), 15 O (T 1 ⁄ 2 = 2 min ), and 18 F (T 1 ⁄ 2 = 110 min ) used for positron emission tomography are typically produced by ...
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Tritium is a low-energy beta emitter commonly used as a radiotracer in research and in traser [check spelling] self-powered lightings.The half-life of tritium is 12.3 years. The electrons from beta emission from tritium are so low in energy (average decay energy 5.7 keV) that a Geiger counter cannot be used to detect the
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