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plutonium-based fission bomb

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  • Plutonium — (pronEng|pluːˈtoʊniəm, symbol Pu, atomic number 94) is a rare radioactive, metallic chemical element. The most significant isotope of plutonium is 239Pu, with a half life of 24,100 years; this isotope is fissile and is used in most modern nuclear …   Wikipedia

  • Plutonium in the environment — is an article which is part of the actinides in the environment series. Almost all plutonium present in the environment is due to human activity because the majority of plutonium isotopes are shortlived on a geological timescale.… …   Wikipedia

  • Plutonium-239 — Infobox isotope alternate names = symbol =Pu mass number =239 mass = num neutrons =145 num protons =94 abundance = halflife = 24,110 years error halflife = background = #FF6 text color = decay product =Uranium 235 decay symbol =U decay mass =235… …   Wikipedia

  • nuclear fission — fission (def. 2). [1885 90] * * * Division of a heavy atomic nucleus into two fragments of roughly equal mass, accompanied by the release of a large amount of energy, the binding energy of the subatomic particles. The energy released in the… …   Universalium

  • Nuclear fission — For the generation of electrical power by fission, see Nuclear power. Splitting the atom redirects here. For the EP, see Splitting the Atom. Nuclear physics Radioactive decay Nuclear fission Nuclear fusio …   Wikipedia

  • atomic bomb — 1. a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy. 2. a bomb whose explosive force comes from a chain reaction based on nuclear fission in U… …   Universalium

  • Thin Man (nuclear bomb) — Thin Man plutonium gun test casings at Wendover Army Air Field, as part of Project Alberta in the Manhattan Project. In the background, casing designs for Fat Man bombs can be seen as well. The Thin Man (formally, Mark 2) nuclear bomb was a… …   Wikipedia

  • Thin Man nuclear bomb — The Thin Man (formally, Mark 2) nuclear bomb was a proposed plutonium gun type nuclear bomb which the United States was developing during the Manhattan Project. Its development was aborted when it was discovered that the spontaneous fission rate… …   Wikipedia

  • atomic bomb — noun a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) (Freq. 2) • Syn: ↑atom bomb, ↑A bomb, ↑fission bomb, ↑plutonium bomb • Hypernyms: ↑nuclear… …   Useful english dictionary

  • Gun-type fission weapon — Gun type fission weapons are fission based nuclear weapons whose design assembles their fissile material into a supercritical mass by the use of the gun method: shooting one piece of sub critical material into another. Although this is sometimes… …   Wikipedia

  • B53 nuclear bomb — The B53 with a yield of 9 Mt is one of the most powerful nuclear weapons built by the United States, and one of the last very high yield thermonuclear bombs in U.S. service. Development Development of the weapon began in 1955 by Los Alamos… …   Wikipedia

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