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уранијум (U)

A heavy, naturally radioactive, metallic element (atomic number 92). Its two principally occurring isotopes are uranium-235 and uranium-238. Uranium-235 is indispensable to the nuclear industry because it is the only isotope existing in nature, to any appreciable extent, that is fissionable by thermal neutrons. Uranium-238 is also important because it absorbs neutrons to produce a radioactive isotope that subsequently decays to the isotope plutonium-239, which also is fissionable by thermal neutrons.

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уранијум
Énergie; Energie nucléaire

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уранијум
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природни уранијум
Énergie; Charbon; Gaz naturel; Service

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.

обогаћени уранијум
Énergie; Charbon; Gaz naturel; Service

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пробој
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битуменска смола
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топлотна вредност
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