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Appendix G: Glossary
Pages 189-192

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From page 189...
... Dispersion fuel: Fuel for research reactors whose uranium is contained in particles dispersed in a metallic matrix, which is then enclosed within metal cladding to contain the radioactive decay products and prevent chemical reactions. Research reactor fuels used today are all of this type.
From page 190...
... High-density LEU fuel: Reactor fuel that contains LEU that has sufficient uranium density to enable operation of high performance research reactors without significant degradation in performance. In practice, that means fuel with a uranium density exceeding about 8 gU/cm3.
From page 191...
... Monolithic fuel: Fuel for research reactors whose uranium is contained in a dense, uniform alloy enclosed within metal cladding to contain the radioactive decay products and prevent chemical reactions. It is possible to get much higher uranium density in the fuel using monolithic fuel rather than the more common dispersion fuel.
From page 192...
... Spallation: High-energy nuclear reaction in which a target nucleus struck by an incident particle of energy greater than about 50 million electron volts ejects numerous lighter particles such as neutrons. Supercritical: Pertaining to a mass of radioactive material in which the rate of a chain reaction increases with time.


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