electron annihilation

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• ÉLECTRON — L’électron est une particule élémentaire stable. Il possède une charge électrique négative, une très petite masse (près de 2 000 fois plus petite que celle de l’atome le plus léger: l’hydrogène), et un moment angulaire propre appelé spin, auquel… …   Encyclopédie Universelle

• Annihilation — is defined as total destruction or complete obliteration of an object; [ [http://dictionary.reference.com/search?r=2 q=Annihilation Dictionary Definition] (2006) Dictionary.com.] having its root in the Latin nihil (nothing). A literal translation …   Wikipedia

• Electron-positron annihilation — occurs when an electron and a positron (the electron s anti particle) collide. The result of the collision is the conversion of the electron and positron and the creation of gamma ray photons or, less often, other particles. The process must… …   Wikipedia

• annihilation — [ aniilasjɔ̃ ] n. f. • XVIe; anichilation XIVe; lat. ecclés. annihilatio → annihiler 1 ♦ Vx Anéantissement, annulation. L annihilation de ses projets. 2 ♦ Mod. Phys. Transformation d une paire (particule et antiparticule) en un rayonnement de… …   Encyclopédie Universelle

• Électron — Traduction à relire Electron → …   Wikipédia en Français

• Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

• annihilation — /euh nuy euh lay sheuhn/, n. 1. the act or an instance of annihilating. 2. the state of being annihilated; extinction; destruction. 3. Physics. a. Also called pair annihilation. the process in which a particle and antiparticle unite, annihilate… …   Universalium

• annihilation radiation — noun : radiation produced by the mutually annihilating coalescence of an electron and a positron from which two radiation quanta travel in opposite directions with a wavelength corresponding to that of very short gamma rays, being approximately 0 …   Useful english dictionary

• annihilation radiation — Physics. electromagnetic radiation produced by the coalescence and mutual annihilation of a positron and an electron, each pair forming two photons having a minimum energy of 0.5 million electron volts each. [1960 65] * * * …   Universalium

• annihilation radiation — radiation produced by the collision and annihilation of a particle and its antiparticle, especially the two 0.511 MeV gamma ray photons produced by the annihilation of a positron and an electron …   Medical dictionary

• annihilation radiation — /ənaɪəˌleɪʃən reɪdiˈeɪʃən/ (say uhnuyuh.layshuhn raydee ayshuhn) noun the radiation produced when a particle and an antiparticle, such as an electron and a positron, interact and disappear with a resultant release of energy …