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chain reaction |
in physics, a self-sustaining reaction in which the particles produced by nuclear fission cause the fission of other nuclei. [1/3 definitions] |
fissile |
of matter, able to undergo nuclear fission. [1/2 definitions] |
nuclear energy |
energy released from atomic nuclei, as in nuclear fission or fusion. |
nuclear reactor |
any of several devices that initiate and control a nuclear fission chain reaction to produce energy and material used for experimental and medical purposes. |
plutonium |
a radioactive chemical element of the actinide series that has ninety-four protons in each nucleus and that is capable of explosive nuclear fission in a chain reaction, used as fuel in some types of nuclear reactors. (symbol: Pu) |
strontium |
a highly reactive chemical element of the alkaline-earth group that has thirty-eight protons in each nucleus, that occurs naturally only in compounds, and that has highly toxic radioactive isotopes that are by-products of some types of nuclear fission reactions. (symbol: Sr) |
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