natural uranium

См. также в других словарях:

• Natural uranium — (NU) refers to refined uranium with the same isotopic ratio as found in nature. It contains 0.7 % uranium 235, 99.3 % uranium 238, and a trace of uranium 234 by weight. In terms of the amount of radioactivity, approximately 2.2 %… …   Wikipedia

• natural uranium — natural uranium, uranium as found in nature, or refined, with little or no fissionable material added …   Useful english dictionary

• Natural uranium — См. Природный уран Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

• natural uranium — gamtinis uranas statusas T sritis fizika atitikmenys: angl. natural uranium vok. natürliches Uran, n; Natururan, n rus. природный уран, m pranc. uranium naturel, m …   Fizikos terminų žodynas

• Natural uranium —   Uranium with the U 235 isotope present at a concentration of 0.711 percent (by weight), that is, uranium with its isotopic content exactly as it is found in nature.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

• Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

• Natural nuclear fission reactor — Geological situation in Gabon leading to natural nuclear fission reactors 1. Nuclear reactor zones 2. Sandstone 3. Uranium ore layer 4. Granite A natural nuclear fission reactor is a uranium deposit where analysis of isotope ratios has shown that …   Wikipedia

• Uranium-234 — Infobox isotope background = #fc6 text color = isotope name = Uranium 234 isotope filename = alternate names = mass number =234 symbol =U num neutrons =142 num protons =92 abundance =0.0055% halflife =246,000 years error halflife = decay product …   Wikipedia

• Uranium mining — The Ranger Uranium Mine in Australia …   Wikipedia

• Uranium-238 — Infobox isotope background =#fc6 text color = image caption = 10 gram sample alternate names = mass number =238 symbol =U num neutrons =146 num protons =92 abundance = 99.284% halflife = 4.46 billion years error halflife = decay product = Thorium …   Wikipedia

• Uranium-236 — Infobox isotope background = #fc6 text color = isotope name = Uranium 236 isotope filename = alternate names = mass number =236 symbol =U num neutrons =144 num protons =92 abundance =< 10^ 10 halflife = 2.348 x10^7 years error halflife = decay… …   Wikipedia