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1. Cameco Corp. (CCJ) Cameco Corp. is a Canadian company that has by far the largest market cap of any uranium company. The company can produce more than 30 million pounds of uranium concentrates ...
Mention nuclear energy as a viable investment category and chances are, you’ll eventually encounter some hesitation from your audience. While the best uranium stocks to buy now offer myriad ...
There are different ways to play the nuclear energy space, but two of the most interesting right now are Uranium Energy (NYSEMKT: UEC), which supplies power plants with nuclear fuel, and NuScale ...
Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years.
Natural uranium is made weapons-grade through isotopic enrichment. Initially only about 0.7% of it is fissile U-235, with the rest being almost entirely uranium-238 (U-238). They are separated by their differing masses. Highly enriched uranium is considered weapons-grade when it has been enriched to about 90% U-235. [citation needed]
Fission product yields by mass for thermal neutron fission of U-235 and Pu-239 (the two typical of current nuclear power reactors) and U-233 (used in the thorium cycle). This page discusses each of the main elements in the mixture of fission products produced by nuclear fission of the common nuclear fuels uranium and plutonium.
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Since nuclear chain reactions may only require natural materials (such as water and uranium, if the uranium has sufficient amounts of 235 U), it was possible to have these chain reactions occur in the distant past when uranium-235 concentrations were higher than today, and where there was the right combination of materials within the Earth's crust.