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首页> 外文期刊>Physical review letters >Low-Emittance Electron Bunches from a Laser-Plasma Accelerator Measured using Single-Shot X-Ray Spectroscopy
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Low-Emittance Electron Bunches from a Laser-Plasma Accelerator Measured using Single-Shot X-Ray Spectroscopy

机译：使用单发X射线光谱仪测量的激光等离子加速器产生的低发射电子束

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摘要

X-ray spectroscopy is used to obtain single-shot information on electron beam emittance in a low-energy-spread 0.5 GeV-cLass laser-plasma accelerator. Measurements of betatron radiation from 2 to 20 keV used a CCD and single-photon counting techniques. By matching x-ray spectra to betatron radiation models, the electron bunch radius inside the plasma is estimated to be ～0.1 μm. Combining this with simultaneous electron spectra, normalized transverse emittance is estimated to be as low as 0.1 mm mrad, consistent with three-dimensional particle-in-cell simulations. Correlations of the bunch radius with electron beam parameters are presented.
机译：X射线光谱学用于在低能量扩散的0.5 GeV-cLass激光等离子体加速器中获得有关电子束发射的单次信息。使用CCD和单光子计数技术测量2至20 keV的电子感应加速器辐射。通过将X射线光谱与电子感应加速器辐射模型进行匹配，等离子体内部的电子束半径估计约为0.1μm。将其与同时的电子光谱结合起来，归一化的横向发射率估计低至0.1 mm mrad，这与三维单元粒子模拟相一致。提出了束半径与电子束参数的相关性。

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  • 来源
    《Physical review letters》 |2012年第6期|p.064802.1-064802.5|共5页
  • 作者

    G.R. Plateau; C.G.R. Geddes; D.B. Thorn; M. Chen; C. Benedetti; E. Esarey; A. J. Gonsalves; N.H. Matlis; K. Nakamura; C.B. Schroeder; S. Shiraishi; T. Sokollik; J. van Tilborg; Cs. Toth; S. Trotsenko; T.S. Kim; M. Battaglia; Th. Stoehlker; W.P. Leemans;

  • 作者单位

    Palaiseau 91128, France Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    ExtreMe Matter Institute EMMI, D-64291 Darmstadt, Germany D-64291 Darmstadt, Germany;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Helmholtz-Institut Jena, D-07743 Jena, Germany D-64291 Darmstadt, Germany;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA University of California, Santa Cruz, CA 95064, USA;

    ExtreMe Matter Institute EMMI, D-64291 Darmstadt, Germany Helmholtz-Institut Jena, D-07743 Jena, Germany Palaiseau 91128, France;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Berkeley, CA, USA;

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  • 正文语种 eng
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  • 关键词

    relativistic electron and positron beams; laser-plasma acceleration of electrons and ions; X-ray, gamma-ray and particle generation;

    机译：相对论电子束和正电子束;电子和离子的激光等离子体加速;X射线;γ射线和粒子生成;

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