Search results
Results from the WOW.Com Content Network
Moreover, 239 Pu and 240 Pu cannot be chemically distinguished, so expensive and difficult isotope separation would be necessary to separate them. Weapons-grade plutonium is defined as containing no more than 7% 240 Pu; this is achieved by only exposing 238 U to neutron sources for short periods of time to minimize the 240 Pu produced.
Pu-239 is a 2006 British drama film written and directed by Hollywood producer Scott Z. Burns in his feature directorial debut, which was based on the book PU-239 and Other Russian Fantasies written by Ken Kalfus.
In contrast, the generic civilian Pressurized water reactor, routinely does (typical for 2015 Generation II reactor) 45 GWd/tU of burnup, resulting in the purity of Pu-239 being 50.5%, alongside a Pu-240 content of 25.2%, [5] [6] The remaining portion includes much more of the heat generating Pu-238 and Pu-241 isotopes than are to be found in ...
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon, and hydrogen.
The center is a 501(c)(3) non-profit corporation an, as of 2014, has one full-time employee. On October 15, 1983, about 10,000 demonstrators turned out for protest at the Rocky Flats Nuclear Weapons Plant (well short of the 21,000 hoped for by protest organizers). No arrests were made.
The most stable are 244 Pu with a half-life of 80.8 million years; 242 Pu with a half-life of 373,300 years; and 239 Pu with a half-life of 24,110 years; and 240 Pu with a half-life of 6,560 years. This element also has eight meta states ; all have half-lives of less than one second.
The short half-life of 87.7 years of Pu-238 means that a large amount of it decayed during its time inside his body, especially when compared to the 24,100 year half-life of Pu-239. When specimens were taken during Stevens's cancer surgery, Earl Miller took them for radiological testing; Scott collected urine and stool samples. [ 1 ]
A full list can be found at Wikipedia:WikiProject Stub sorting/List of stubs. More than one stub template may be used, if necessary, though no more than four should be used on any article. Place a stub template at the very end of the article, after the "External links" section, any navigation templates, and the category tags.