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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 National Synchrotron Light Source ： ウィキペディア英語版 National Synchrotron Light Source The National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) in Upton, New York is a national user research facility funded by the U.S. Department of Energy (DOE). The NSLS is considered a second generation synchrotron, and was built beginning in 1978 and finished in 1984.〔(【引用サイトリンク】url=http://www.nsls.bnl.gov/about/history/ )〕 The NSLS experimental floor consists of two electron storage rings: an X-ray ring and a VUV (vacuum ultraviolet) ring which provide intense, focused light spanning the electromagnetic spectrum from the infrared through X-rays. The properties of this light and the specially designed experimental stations, called beamlines, allow scientists in many fields of research to perform experiments not otherwise possible at their own laboratories. ==History== Ground was broken for the NSLS on September 28, 1978. The VUV ring began operations in late 1982 and the X-ray ring was commissioned in 1984. In 1986, a second phase of construction expanded the NSLS by , which added offices, laboratories and room for new experimental equipment.〔 After 32 years of producing synchrotron light, the final stored beam was dumped at 16.00 EDT on 30 September 2014, and NSLS was officially shut down. During the construction of the NSLS, two scientists, Renate Chasman and George Kenneth Green, invented a special periodic arrangement of magnetic elements (a magnetic lattice) to provide optimized bending and focusing of electrons.〔 The design was called the Chasman–Green lattice, and it became the basis of design for every synchrotron storage ring. Storage rings are characterized by the number of straight sections and bend sections in their design. The bend sections produce more light than the straight sections due to the change in angular momentum of the electrons. Chasman and Green accounted for this in their design by adding insertion devices, known as wigglers and undulators, in the straight sections of the storage ring.〔 These insertion devices produce the brightest light among the sections of the ring and thus, beamlines are typically built downstream from them. 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「National Synchrotron Light Source」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.