Spontaneous and amplified radiation at the initial stage of a SASE FEL.

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At the initial stage of a self-amplified spontaneous emission (SASE) free-electron laser (FEL), spontaneous undulator radiation in certain experimental configurations can dominate the amplified signal over an extended undulator distance. In this paper they study both the spontaneous and the amplified radiation in the framework of the paraxial wave equation and determine the transition from the dominance of spontaneous emission to exponential amplification. They compare theoretical expectations with SASE simulation codes GINGER and GENESIS.

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4 pages

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Huang, Z. & Kim, K. J. November 1, 2002.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 41 times. More information about this article can be viewed below.

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At the initial stage of a self-amplified spontaneous emission (SASE) free-electron laser (FEL), spontaneous undulator radiation in certain experimental configurations can dominate the amplified signal over an extended undulator distance. In this paper they study both the spontaneous and the amplified radiation in the framework of the paraxial wave equation and determine the transition from the dominance of spontaneous emission to exponential amplification. They compare theoretical expectations with SASE simulation codes GINGER and GENESIS.

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4 pages

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  • 24th International Free Electron Laser Conference and 9th FEL User Workshop (FEL 2002), Argonne, IL (US), 09/09/2002--09/13/2002

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  • Report No.: ANL/ASD/CP-107817
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 805259
  • Archival Resource Key: ark:/67531/metadc739963

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  • November 1, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • June 5, 2020, 5:01 p.m.

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Huang, Z. & Kim, K. J. Spontaneous and amplified radiation at the initial stage of a SASE FEL., article, November 1, 2002; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc739963/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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