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To reduce the concentration of Pu-240 in the plutonium produced, weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor. More precisely, weapons-grade plutonium is obtained from uranium irradiated to a low burnup.
A Zippe-type centrifuge [9] has a hollow, cylindrical rotor filled with gaseous uranium hexafluoride (UF 6) A rotating magnetic field at the bottom of the rotor, as used in an electric motor, is able to spin it quickly enough that the UF 6 is thrown towards the outer wall, with the 238 UF 6 enriched in the outermost layer and the 235 UF 6 ...
U will inevitably be enriched slightly stronger than 235 U, which is a negligible effect in a once-through fuel cycle due to the low (55 ppm) share of 234 U in natural uranium but can become relevant after successive passes through an enrichment-burnup-reprocessing-enrichment cycle, depending on enrichment and burnup characteristics. 234
[2] In 1954, Gilbert wrote in his autobiography, The Man Who Lives in Paradise , that the Atomic Energy Laboratory was "the most spectacular of [their] new educational toys". Gilbert wrote that the Government encouraged the set's development because it believed the lab would aid public understanding of atomic energy and emphasize its ...
Lee Sang-kyu, a nuclear engineering expert at South Korea's Korea Institute for Defense Analysis, said North Korea is estimated to have 80-90 nuclear warheads of uranium and plutonium, and that is ...
Infrared absorption spectra of the two UF 6 isotopes at 300 and 80 K. Schematic of a stage of an isotope separation plant for uranium enrichment with laser. An infrared laser with a wavelength of approx. 16 μm radiates at a high repetition rate onto a UF6 carrier gas mixture, which flows supersonically out of a laval nozzle.
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is varied. The largest variety is used in research (e.g. in chemistry where atoms of "marker" nuclide are used to figure out reaction mechanisms).
Game 4: No. 8 Ohio State vs. No. 9 Tennessee, 8 p.m. (ABC/ESPN) CFP quarterfinals schedule. The four quarterfinal games will be played on New Year's weekend, with one game on Dec. 31 and three on ...