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plutonium-239
(redirected from 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.
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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.
Microbe polishes off pollutant by Science News
Indeed, the fabrication of Plutonium 239 used for nuclear bombs or as fuel for power stations is a long process.
Uranium fantasies: did Saddam Hussein try to buy uranium from Africa? ... by Misser, Francois / New African
Someday soon, "slightly" radioactive steel containing traces of tritium, strontium 90 and plutonium 239 salvaged from defunct nuclear facilities may be showing up in laptop computer batteries, toasters and kids' furniture.
EPA plan for radioactive recycling by Skolnick, Sharon R. / Earth Island Journal
 
 
 
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