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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Uranium hydride bomb ： ウィキペディア英語版 Uranium hydride bomb The uranium hydride bomb was a variant design of the atomic bomb, that was first suggested by Robert Oppenheimer in 1939 and advocated and tested by Edward Teller.〔(Operation Upshot-Knothole )〕 It used deuterium, an isotope of hydrogen, as a neutron moderator in a U235-deuterium compound. The chain reaction is a slow nuclear fission (see neutron temperature). Bomb efficiency is very adversely affected by the cooling of neutrons since it delays the reaction. Two uranium hydride bombs are known to have been tested, the ''Ruth'' and ''Ray'' test explosions in Operation Upshot-Knothole. The tests produced a yield comparable to 200 tons of TNT each; both tests were considered to be fizzles.〔〔(W48 ) - globalsecurity.org〕 All other nuclear weapons programs have relied on fast neutrons in their weapons designs. ==Theory== The hydrogen in uranium hydride (UH3) or plutonium hydride moderates (slows) the neutrons, thereby increasing the nuclear cross section for neutron absorption. The result would be a lower required critical mass, thereby reducing the amount of pure U235 or plutonium needed for an explosion. The result was that the slower neutrons delayed the reaction time too much, and reduced the efficiency of the weapon.〔 It increased the time between subsequent neutron generation events necessary for rapid explosion. It creates a problem in the containment of the explosion; the inertia that is used to confine implosion type bombs will not be able to confine the reaction. The end result may be a fizzle instead of a bang. The predicted energy yield would be 1000 tons TNT equivalent.〔(Operation Upshot-Knothole ) (Nuclear Weapon Archive)〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Uranium hydride bomb」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.