Natural uranium may be processed, or enriched, which separates the U-235 from the U-238. Uranium-235 is important because of the high probability of fissioning when bombarded with slow neutrons and generating the heat in nuclear reactors, used as a source of power, and to provide the fissile material for nuclear weapons. In nature, uranium atoms exist as uranium-238 (99.275 percent), uranium-235 (0.711 percent), and a very small amount of uranium-234 (0.0058 percent). (December 2007) Please do not remove this message until the dispute is resolved.ĭepleted Uranium (DU) is uranium primarily composed of the isotope uranium-238. Please see the discussion on the talk page. The neutrality of this article is disputed.
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