fissile material


fissile material

also called  Fissionable Material,  

      in nuclear physics, any species of atomic nucleus that can undergo the fission reaction. The principal fissile materials are uranium-235 (0.7 percent of naturally occurring uranium), plutonium-239, and uranium-233, the last two being artificially produced from the fertile materials uranium-238 and thorium-232, respectively. A fertile material, not itself capable of undergoing fission with low-energy neutrons, is one that decays into fissile material after neutron absorption within a reactor. Thorium-232 and uranium-238 are the only two naturally occurring fertile materials.

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Universalium. 2010.

Look at other dictionaries:

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  • Fissile material —   Material that can be caused to undergo atomic fission when bombarded by neutrons. The most important fissionable materials are uranium 235, plutonium 239, and uranium 233.   U.S. Dept. of Energy, Energy Information Administration s Energy… …   Energy terms

  • Fissile Material Cut-off Treaty — The Fissile Material Cutoff Treaty (also FISSBAN or FMCT) is a proposed international treaty to prohibit the further production of weapons grade uranium and plutonium. It would not prevent the production of fuel grade uranium and plutonium, nor… …   Wikipedia

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  • Fertile material — is a term used to describe nuclides which generally themselves do not undergo induced fission (fissionable by thermal neutrons) but from which fissile material is generated by neutron absorption and subsequent nuclei conversions. Fertile… …   Wikipedia


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