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  2. Enriched uranium - Wikipedia

    en.wikipedia.org/wiki/Enriched_uranium

    Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235 U) has been increased through the process of isotope separation.Naturally occurring uranium is composed of three major isotopes: uranium-238 (238 U with 99.2732–99.2752% natural abundance), uranium-235 (235 U, 0.7198–0.7210%), and uranium-234 (234 U, 0.0049–0.0059%).

  3. Isotope separation - Wikipedia

    en.wikipedia.org/wiki/Isotope_separation

    If the desired goal is not an atom bomb but running a nuclear power plant, the alternative to enrichment of uranium for use in a light-water reactor is the use of a neutron moderator with a lower neutron absorption cross section than protium. Options include heavy water as used in CANDU type reactors or graphite as used in magnox or RBMK ...

  4. Helikon vortex separation process - Wikipedia

    en.wikipedia.org/wiki/Helikon_vortex_separation...

    The Uranium Enrichment Corporation of South Africa, Ltd. (UCOR) developed the process, operating a facility at Pelindaba (known as the 'Y' plant) to produce hundreds of kilograms of HEU. Aerodynamic enrichment processes require large amounts of electricity and are not generally considered economically competitive because of high energy ...

  5. Zippe-type centrifuge - Wikipedia

    en.wikipedia.org/wiki/Zippe-type_centrifuge

    Natural uranium consists of three isotopes; the majority (99.274%) is U-238, while approximately 0.72% is U-235, fissile by thermal neutrons, and the remaining 0.0055% is U-234. If natural uranium is enriched to 3% U-235, it can be used as fuel for light water nuclear reactors. If it is enriched to 90% uranium-235, it can be used for nuclear ...

  6. Weapons-grade nuclear material - Wikipedia

    en.wikipedia.org/wiki/Weapons-grade_nuclear_material

    Natural uranium is made weapons-grade through isotopic enrichment. Initially only about 0.7% of it is fissile U-235, with the rest being almost entirely uranium-238 (U-238). They are separated by their differing masses. Highly enriched uranium is considered weapons-grade when it has been enriched to about 90% U-235. [citation needed]

  7. A second Manhattan Project? Why new uranium enrichment ... - AOL

    www.aol.com/second-manhattan-project-why-uranium...

    It's easy to lose track of nuclear news out of Oak Ridge. Here's why the Sept. 4 announcement was so different.

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