positron

positron
A subatomic particle of mass and charge equal to the electron but of opposite ( i.e., positive) charge. SYN: positive electron.

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pos·i·tron 'päz-ə-.trän n a positively charged particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of the electron called also positive electron

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n.
an electrically charged particle released in some radioactive decays, notably fluorine-18 or nitrogen-13, that has the same mass as an electron but opposite charge. It has a very short lifetime as it quickly reacts with an electron to produce a pair of gamma rays, which are emitted in diametrically opposite directions. The energy of each gamma ray is always 511 keV.

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pos·i·tron (pozґĭ-tron) [positive electron] the antiparticle of the electron, a positive electron; a particle having the mass of the electron but a positive electric charge. Symbol e+.

Medical dictionary. 2011.

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  • 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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