During the more than 500 above ground nuclear tests performed around the world, the fallout of Plutonium-239 rained down from ...

This, as he found out, isn’t something you should do lightly, as the one he used ended up containing an interesting mix of radioactive materials, including small amounts of plutonium-239 ...

Most of these varieties are fissile - meaning their atomic nuclei can easily be split. Plutonium-239 is the isotope typically ...

The crude reactors on the site were designed to create weapons-grade isotopes such as Plutonium-239 and Uranium-235, which ...

But unfortunately this arrangement doesn't last very long. Because plutonium-239 self destructs, undergoing radioactive decay by spitting out a highly energetic alpha-particle to produce Uranium-235.

In this capacity he had supervision of the research and development connected with, and the design, construction and operation of all plants required to produce plutonium-239 and uranium-235, ...

In 1945, Hiroshima was destroyed by the fission of about one kilogram of uranium 234, while Nagasaki was destroyed by the fission of one kilogram of plutonium 239. Analysts assessed information from ...

Plutonium-239, however, takes a little longer; 24,000 years. The US dumped 437 plastic bags filled with lumps of plutonium that had spewed after a bomb misfired into a 33-foot crater left behind ...

The TBP solution captured the plutonium and uranium while the nitric acid/water solution retained unwanted byproducts from the reaction. The TBP solution was removed and treated with additional ...