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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 Gamow factor ： ウィキペディア英語版 Gamow factor The Gamow Factor or Gamow-Sommerfeld Factor, named after its discoverer George Gamow, is a probability factor for two nuclear particles' chance of overcoming the Coulomb barrier in order to undergo nuclear reactions, for example in nuclear fusion. By classical physics, there is almost no possibility for protons to fuse by crossing each other's Coulomb barrier, but when George Gamow instead applied quantum mechanics to the problem, he found that there was a significant chance for the fusion due to tunneling. The probability of two nuclear particles overcoming their electrostatic barriers is given by the following equation, $P\_g(E)\; \backslash equiv\; e^^\}$ Where $E\_g$ is the Gamow Energy. $E\_g\; \backslash equiv\; 2\; m\_r\; c^2\; (\backslash pi\; \backslash alpha\; Z\_a\; Z\_b)^2$ Here, $m\_r$ is the reduced mass of the two particles. $m\_r\; =\; \backslash frac$ The constant $\backslash alpha$ is the fine structure constant, and the constants $Z\_a$ and $Z\_b$ are the respective atomic numbers of each particle. The probability of overcoming the barrier increases rapidly with increasing particle energy, but at a given temperature the probability of a particle having a high energy falls off rapidly, following the Maxwell–Boltzmann distribution. Gamow found that, taken together, these effects mean that for any given temperature, the particles that actually fuse are mostly in a temperature-dependent narrow range of energies known as the Gamow window.〔(【引用サイトリンク】publisher=Dept. Physics & AstronomyUniversity of Tennessee )〕 ==References== 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「Gamow factor」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.