uranium 238


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uranium 238


n.
the radioactive uranium isotope having a mass number of 238, used chiefly in nuclear reactors as a source of the fissionable isotope plutonium 239.
[1940–45]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.uranium 238 - the commonest isotope of uraniumuranium 238 - the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239
atomic number 92, uranium, U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
References in periodicals archive ?
When the atoms of Uranium 235 in its fuel core were split, escaping neutrons would bond with an external layer of raw Uranium 238, which would then transform it into Plutonium 239.
This left the fuel in a very unstable condition, with actual nuclear fuel complete with uranium 238, 235 and all the fission products, in contact with water.
The heavier isotope of uranium 238 in the uranium hexafluoride gas concentrates at the walls of the centrifuge as it spins.
Uranium 238 is utilized and not the (fissile) Uranium 235 of conventional nuclear technology.