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Enriched uranium
Videos
Enriched uranium is a type of uranium in which the percent composition of uranium-235 has been increased through the process of isotope separation. Naturally occurring uranium is composed primarily of
A drum of yellowcake (a mixture of uranium precipitates)
A drum of yellowcake (a mixture of uranium precipitates)
A billet of highly enriched uranium metal
A billet of highly enriched uranium metal
Gaseous diffusion uses semi-permeable membranes to separate enriched uranium
Gaseous diffusion uses semi-permeable membranes to separate enriched uranium
A cascade of gas centrifuges at a U.S. enrichment plant
A cascade of gas centrifuges at a U.S. enrichment plant
Little Boy
Videos
Little Boy was a type of atomic bomb created by the Manhattan Project during World War II. The name is also often used to describe the specific bomb used in the bombing of the Japanese city of Hiroshi
Enriched uranium
…infinite mass of 5.4% 235U being required. For criticality experiments, enrichment of uranium to over 97% has been accomplished. The first uranium bomb, Little Boy, dropped by the United States on Hiroshima in 1945, used 64 kilograms (141 lb) of 80% enriched uranium. Wrapping the weapon's fissile core in a neutron…
Little Boy bomb
Little Boy bomb
"Thin Man" plutonium gun test casings at Muroc Army Airfield, as part of Project Alberta in the Manhattan Project, illustrating their relative length
"Thin Man" plutonium gun test casings at Muroc Army Airfield, as part of Project Alberta in the Manhattan Project, illustrating their relative length and size
Little Boy target case (left) attached to a gun tube at Anchor Ranch, Los Alamos, used for testing purposes. Compare with a similar image of the Thin
Little Boy target case (left) attached to a gun tube at Anchor Ranch, Los Alamos, used for testing purposes. Compare with a similar image of the Thin Man internal components.
As part of Project Alberta, Commander A. Francis Birch (left) assembles the combat unit (L-11) while physicist Norman Ramsey watches. This is one of t
As part of Project Alberta, Commander A. Francis Birch (left) assembles the combat unit (L-11) while physicist Norman Ramsey watches. This is one of the rare photos where the interior of the bomb can be seen, with the fuzing units and battery boxes visible, attached around the gun tube.