gamma emission

См. также в других словарях:

• Induced gamma emission — In physics, induced gamma emission (IGE) refers to the process of fluorescent emission of gamma rays from excited nuclei, usually involving a specific nuclear isomer. It is analogous to conventional fluorescence, which is defined to be the… …   Wikipedia

• Gamma ray — Gamma rays (denoted as gamma;) are a form of electromagnetic radiation or light emission of frequencies produced by sub atomic particle interactions, such as electron positron annihilation or radioactive decay. Gamma rays are generally… …   Wikipedia

• gamma decay — Type of radioactivity in the most common form of which an unstable atomic nucleus dissipates energy by gamma emission, producing gamma rays. Gamma decay also includes two other processes, internal conversion and internal pair production. In… …   Universalium

• Émission gamma induite — L émission gamma induite est un phénomène physique controversé consistant en l émission de rayons γ par un isomère nucléaire au cours d une transition isomérique au sein de son noyau déclenchée par une excitation extérieure, de manière comparable …   Wikipédia en Français

• Gamma ray burst emission mechanisms — are theories that explain how the energy from a gamma ray burst progenitor (regardless of the actual nature of the progenitor) is turned into radiation. These mechanisms are a major topic of research as of 2007. Neither the light curves nor the… …   Wikipedia

• Gamma ray burst progenitors — are the types of celestial objects that can emit gamma ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly… …   Wikipedia

• Gamma-ray astronomy — is the astronomical study of the cosmos with gamma rays. Early history Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Eugene Feenberg… …   Wikipedia

• gamma — [ ga(m)ma ] n. m. • transcrit 1824; mot gr. 1 ♦ Troisième lettre de l alphabet grec (Γ, γ), correspondant au G [ g ] . 2 ♦ POINT GAMMA.Astron. Intersection de l écliptique avec le plan de l équateur. ⇒ vernal. Arg. scol. Fête de l École… …   Encyclopédie Universelle

• Gamma Cru — Gamma Crucis Gacrux (γ Crucis) Données d observation (Époque J2000.0) Ascension droite 12h 31m 9.9s Déclinaison –57° 06′ 45″ …   Wikipédia en Français

• Gamma Vel — Gamma Velorum Gamma2 Velorum A/B Données d observation (Époque J2000.0) Ascension droite 08h 09m 32.0s Déclinaison 47° 20′ 12.0″ Constellation Voiles Magnitude apparente …   Wikipédia en Français

• 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