positron
antipartticle an`ti*part"ti*cle ([a^]n`t[i^]*[aum]r"t[i^]*k'l), n. (Physics) A fundamental particle which has the same mass as one of the common fundamental particles, but which has an opposite charge, and for which certain other of the properties (e. g. baryon number, strangeness) may be opposite to that of the normal particle. The antiparticle to an electron is called a {positron}; the antiparticle to a proton is called an {antiproton}; the antiparticle to a neutron is called an {antineutron}. When a particle and its corresponding antiparticle collide, they typically annihilate each other with the production of large quantities of energy, usually in the form of radiation. The interaction of a proton and antiproton cause annihilation with production of mesons. [PJC]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Positrón — Saltar a navegación, búsqueda Positrón e+ Fotografía en una cámara de niebla por C.D. Anderson, del primer positrón identificado. Una lámina de plomo de 6 mm separa la mitad superior de la cámara de la mitad inferior. El positrón debe haber ven …   Wikipedia Español

  • Positron — Propriétés générales Classification Lepton Composition élémentaire Propriétés physiques Masse 510,998 918 (44) keV.c 2 (9,109 382 6(16)×10 31 kg) Charge électrique +1,602 …   Wikipédia en Français

  • Positron — (e+) Klassifikation Elementarteilchen Fermion Lepton Eigenschaften Ladung 1 e Masse …   Deutsch Wikipedia

  • Positron — См. Позитрон Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

  • positrón — Electrón positivo o partícula cargada positivamente emitida desde núcleos radiactivos con déficit de neutrones. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • positron — 1933, coined from posi(tive) (elec)tron …   Etymology dictionary

  • pósitron — s. m. 1.  [Física] Corpúsculo leve de eletricidade positiva. 2.  [Física] Nome dado ao elétron positivo. • Sinônimo geral: PÓSITON • [Brasil] Plural: posítrones ou pósitrons.   ♦ Grafia em Portugal: positrão …   Dicionário da Língua Portuguesa

  • positrón — m. Fís. Partícula elemental con carga eléctrica igual a la del electrón, pero positiva. Es la antipartícula del electrón …   Diccionario de la lengua española

  • positron — ► NOUN Physics ▪ a subatomic particle with the same mass as an electron and a numerically equal but positive charge …   English terms dictionary

  • positron — ☆ positron [päz′i trän΄ ] n. [ POSI(TIVE) + (ELEC)TRON] Particle Physics a positively charged lepton with the same mass and magnitude of charge as the electron; the antiparticle of an electron …   English World dictionary

  • 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

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