plutonium 239

plutonium 239
a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons
Hypernyms: ↑plutonium, ↑Pu, ↑atomic number 94

Useful english dictionary. 2012.

Look at other dictionaries:

  • Plutonium-239 — Плутоний 239 изотоп плутония с атомной массой 239 и периодом полураспада 24,4 тыс. лет. Один их трех главных делящихся нуклидов, представляющих интерес для ядерной энергетики в качестве топлива. Накапливается в облученном ядерном топливе при… …   Термины атомной энергетики

  • Plutonium-239 — Infobox isotope alternate names = symbol =Pu mass number =239 mass = num neutrons =145 num protons =94 abundance = halflife = 24,110 years error halflife = background = #FF6 text color = decay product =Uranium 235 decay symbol =U decay mass =235… …   Wikipedia

  • Plutonium-239 — Eigenschaften …   Deutsch Wikipedia

  • Plutonium 239 — Le plutonium 239, noté 239Pu, est l isotope du plutonium dont le nombre de masse est égal à 239 : son noyau atomique compte 94 protons et 145 neutrons avec un spin 1/2+ pour une masse atomique de 239,0521634 g/mol. Il est caractérisé… …   Wikipédia en Français

  • Plutonium — Neptunium ← Plutonium → Américium Sm …   Wikipédia en Français

  • PLUTONIUM — Élément chimique artificiel de numéro atomique 94, le plutonium a pour symbole chimique Pu. Par analogie avec les éléments uranium et neptunium le précédant immédiatement dans la classification périodique, il doit son nom à la planète Pluton… …   Encyclopédie Universelle

  • Plutonium — (pronEng|pluːˈtoʊniəm, symbol Pu, atomic number 94) is a rare radioactive, metallic chemical element. The most significant isotope of plutonium is 239Pu, with a half life of 24,100 years; this isotope is fissile and is used in most modern nuclear …   Wikipedia

  • Plutonium in the environment — is an article which is part of the actinides in the environment series. Almost all plutonium present in the environment is due to human activity because the majority of plutonium isotopes are shortlived on a geological timescale.… …   Wikipedia

  • Plutonium hexafluoride — is the highest fluoride of plutonium, and is of interest for laser enrichment of plutonium, in particular for the production of pure plutonium 239 from irradiated uranium. This pure plutonium is needed to avoid premature ignition of low mass… …   Wikipedia

  • plutonium — ☆ plutonium [plo͞o tō′nē əm ] n. [ModL, after PLUTO (planet) + IUM: so named (1942) by G. T. SEABORG Glenn T(heodore), E. M. MCMILLAN Edwin Mattison, A. C. Wahl (1917 ), & J. W. Kennedy (1916 57), U.S. physicists who isolated it (1940), because… …   English World dictionary

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