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The two types of beta decay are known as beta minus and beta plus.In beta minus (β −) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β +) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is also known as positron emission.
Nuclear physics. Positron emission, beta plus decay, or β+ decay is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino (νe). [1] Positron emission is mediated by the weak force.
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] Beta particles with an energy ...
Positron emission tomography (PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption. Different tracers are used for various imaging ...
The Magical Number Seven, Plus or Minus Two. " The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing Information " [1] is one of the most highly cited papers in psychology. [2][3][4] It was written by the cognitive psychologist George A. Miller of Harvard University 's Department of Psychology and published in ...
Beta decay: beta particle is emitted from an atomic nucleus Compton scattering: scattering of a photon by a charged particle Neutrino-less double beta decay: If neutrinos are Majorana fermions (that is, their own antiparticle), Neutrino-less double beta decay is possible. Several experiments are searching for this. Pair production and annihilation
Electron capture is sometimes included as a type of beta decay, [1] because the basic nuclear process, mediated by the weak force, is the same. In nuclear physics , beta decay is a type of radioactive decay in which a beta ray (fast energetic electron or positron) and a neutrino are emitted from an atomic nucleus.
In theory, quadruple beta decay may be experimentally observable in three of these nuclei – 96 Zr, 136 Xe, and 150 Nd – with the most promising candidate being 150 Nd. Triple beta-minus decay is also possible for 48 Ca, 96 Zr, and 150 Nd; [35] triple beta-plus decay or electron capture is also possible for 148 Gd and 154 Dy.