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Glossary Atomic Weapons / Term

Highly enriched uranium (HEU)

Uranium in which the naturally occurring U235 isotope - 0.7 percent in natural uranium, 99.3 percent U238 - is increased to 20 percent U235 or above, but usually to 90 percent or more. HEU is used in nuclear weapons, and in some types of research and submarine propulsion reactors.

Permanent link Highly enriched uranium (HEU) - Creation date 2020-04-26


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