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plutonium-239 |
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plutonium-239 [plü′tō·nē·əm ¦tü‚thər·dē′nīn] (nuclear physics) A synthetic isotope chemically similar to uranium and neptunium; atomic number 94; made by bombardment of uranium-238 with slow neutrons in a nuclear reactor; used as nuclear reactor fuel and an ingredient for nuclear weapons. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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By measuring the residue's decomposition rate at various temperatures, the researchers found that spontaneous decomposition would take a whopping 10,000 years to cut the residue's abundance in half--a persistence comparable to that of plutonium 239. And it could be enriched to Plutonium 239, also a prime bomb material. |
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