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Plutonium-242 is not fissile, nor very fertile (requiring 3 more neutron captures to become fissile); and has a low neutron capture cross section, and a longer half-life than any of the lighter isotopes. Plutonium-244 is the most stable isotope of plutonium, with a
Plutonium isotopes are expensive and inconvenient to separate, so particular isotopes are usually manufactured in specialized reactors. Producing plutonium in useful quantities for the first time was a major part of the Manhattan Project during World War II that developed the first atomic bombs.
Manhattan Project scientists had identified two fissile isotopes for potential use in bombs: uranium-235 and plutonium-239. [7] Uranium-235 became the basis of the Little Boy bomb design, first used (without prior testing) in the bombing of Hiroshima ; the design used in the Trinity test, and eventually used in the bombing of Nagasaki ( Fat Man ...
Established in 1943 as part of the Manhattan Project, the site was home to the Hanford Engineer Works and B Reactor, the first full-scale plutonium production reactor in the world. Plutonium manufactured at the site was used in the first atomic bomb, which was tested in the Trinity nuclear test, and in the Fat Man bomb used in the bombing of ...
The Plutonium-238 used in RTGs has a half-life of 88 years, as opposed to the plutonium-239 used in nuclear weapons and reactors, which has a half-life of 24,100 years. [ full citation needed ] In April 1964 a SNAP-9A failed to achieve orbit and disintegrated, dispersing roughly 1 kilogram (2.2 lb) of plutonium-238 over all continents.
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the project was directed by Major General Leslie Groves of the U.S. Army Corps of Engineers.
Pages in category "Isotopes of plutonium" The following 41 pages are in this category, out of 41 total. This list may not reflect recent changes. ...
About 1.2 million Austrians served in all branches of the German armed forces during World War II. After the defeat of the Axis Powers, the Allies occupied Austria in four occupation zones set up at the end of World War II until 1955, when the country again became a fully independent republic under the condition that it remained neutral.