DeVolpi, A. Argonne National Laboratory, Argonne, Illinois.
Last reviewed:January 2020
- Reactor criticality
- Nuclear explosions
- Safety issues
- Related Primary Literature
- Additional Reading
The amount of fissile material (uranium-233, uranium-235, or plutonium-239) that supports a self-sustaining nuclear chain reaction. It ranges from as little as 1 lb (0.45 kg) for plutonium-239 dissolved in light water to 2 tons (1800 kg) for uranium-235 fueling a 1-GWe (1 gigawatt of electric power) nuclear power reactor. See also: Chain reaction (physics)
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