- beta positron emission
- <nucl> ■ Beta+-Zerfall m
English-german technical dictionary. 2013.
beta positron emission
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Positron emission — is a type of beta decay, sometimes referred to as beta plus ( beta;+). In beta plus decay, a proton is converted, via the weak force, to a neutron, a positron (also known as the beta plus particle , the antimatter counterpart of an electron), and … Wikipedia
Positron emission tomography — (PET) is a nuclear medicine imaging technique which produces a three dimensional image or map of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron emitting radionuclide (tracer), which is… … Wikipedia
Beta particle — Beta particles are high energy, high speed electrons or positrons emitted by certain types of radioactive nuclei such as potassium 40. The beta particles emitted are a form of ionizing radiation also known as beta rays. The production of beta… … Wikipedia
beta decay — n. radioactive disintegration of a nucleus with the accompanying emission of a beta particle: the residual nucleus has one more unit of positive charge after electron emission and one less after positron emission … English World dictionary
Emission de neutron — Émission de neutron L émission de neutron est la réaction (radioactive) par laquelle un isotope (instable) perd (spontanément) un neutron, le poids atomique diminue de un et le numéro atomique est conservé. Par exemple 4H se transforme en 3H.… … Wikipédia en Français
Beta decay — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
beta decay — Physics. a radioactive process in which a beta particle is emitted from the nucleus of an atom, raising the atomic number of the atom by one if the particle is negatively charged, lowering it by one if positively charged. [1930 35] * * * Any of… … Universalium
Émission bêta — Radioactivité β La radioactivité bêta ou émission bêta (symbole β) est un type de désintégration radioactive dans laquelle une particule bêta (un électron ou un positron) est émise. On parle de désintégration bêta moins (β ) (basse énergie) ou… … Wikipédia en Français
Positron — Infobox Particle bgcolour = name = Positron (antielectron) caption = num types = composition = Elementary particle family = Fermion group = Lepton generation = First interaction = Gravity, Electromagnetic, Weak antiparticle = Electron theorized … Wikipedia
positron — /poz i tron /, n. Physics. an elementary particle having the same mass and spin as an electron but having a positive charge equal in magnitude to that of the electron s negative charge; the antiparticle of the electron. Also called antielectron,… … Universalium
Émission de proton — La désintégration d un noyau A riche ne protons peuple les niveaux d énergie excités du noyau fils B par émission β+ ou capture électronique. Les états excités qui se situent sous l énergie de séparation de protons (Sp) décroissent par émission γ … Wikipédia en Français
