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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 synchrotron radiation ： ウィキペディア英語版 synchrotron radiation The electromagnetic radiation emitted when charged particles are accelerated radially ($\backslash mathbf\backslash perp\; \backslash mathbf$) is called synchrotron radiation. It is produced, for example, in synchrotrons using bending magnets, undulators and/or wigglers. It is similar to cyclotron radiation except that synchrotron radiation is generated by the acceleration of ultrarelativistic charged particles through magnetic fields. Synchrotron radiation may be achieved artificially in synchrotrons or storage rings, or naturally by fast electrons moving through magnetic fields. The radiation produced in this way has a characteristic polarization and the frequencies generated can range over the entire electromagnetic spectrum. ==History== Synchrotron radiation was named after its discovery in a General Electric synchrotron accelerator built in 1946 and announced in May 1947 by Frank Elder, Anatole Gurewitsch, Robert Langmuir, and Herb Pollock in a letter entitled "Radiation from Electrons in a Synchrotron".〔Elder, F. R.; Gurewitsch, A. M.; Langmuir, R. V.; Pollock, H. C., "(Radiation from Electrons in a Synchrotron )" (1947) ''Physical Review'', vol. 71, Issue 11, pp. 829-830〕 Pollock recounts: :"On April 24, Langmuir and I were running the machine and as usual were trying to push the electron gun and its associated pulse transformer to the limit. Some intermittent sparking had occurred and we asked the technician to observe with a mirror around the protective concrete wall. He immediately signaled to turn off the synchrotron as "he saw an arc in the tube." The vacuum was still excellent, so Langmuir and I came to the end of the wall and observed. At first we thought it might be due to Cherenkov radiation, but it soon became clearer that we were seeing Ivanenko and Pomeranchuk radiation."〔Iwanenko D., Pomeranchuk I., "(On the maximal energy attainable in betatron )", (1944) ''Physical Review'' vol.65, p. 343〕 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「synchrotron radiation」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.