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首页> 外文期刊>Physical review letters >Magnetic Field Generation by the Rayleigh-Taylor Instability in Laser-Driven Planar Plastic Targets
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Magnetic Field Generation by the Rayleigh-Taylor Instability in Laser-Driven Planar Plastic Targets

机译：激光驱动平面塑料靶中的瑞利-泰勒不稳定性产生磁场

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摘要

Magnetic fields generated by the Rayleigh-Taylor instability were measured in laser-accelerated planar foils using ultrafast proton radiography. Thin plastic foils were irradiated with ～4-kJ, 2.5-ns laser pulses focused to an intensity of ～10~(14) W/cm~2 on the OMEGA EP Laser System. Target modulations were seeded by laser nonuniformities and amplified during target acceleration by the Rayleigh-Taylor instability. The experimental data show the hydrodynamic evolution of the target and MG-level magnetic fields generated in the broken foil. The experimental data are in good agreement with predictions from 2-D magnetohydrodynamic simulations.
机译：使用超快质子射线照相术在激光加速的平面箔片中测量了由瑞利-泰勒不稳定性产生的磁场。在OMEGA EP激光系统上，以〜4-kJ，2.5 ns的激光脉冲辐照聚焦到〜10〜（14）W / cm〜2的强度的2.5ns激光脉冲。目标调制由激光不均匀性引起，并在目标加速期间因瑞利-泰勒不稳定性而放大。实验数据显示了靶材的流体动力学演变以及在破碎箔片中产生的MG级磁场。实验数据与二维磁流体动力学模拟的预测非常吻合。

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  • 来源
    《Physical review letters》 |2012年第11期|p.115001.1-115001.5|共5页
  • 作者

    L. Gao; P.M. Nilson; I. V. Igumenschev; S.X. Hu; J.R. Davies; C. Stoeckl; M.G. Haines; D.H. Froula; R. Betti; D.D. Meyerhofer;

  • 作者单位

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA,Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA,Fusion Science Center for Extreme States of Matter, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA,Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623, USA,Fusion Science Center for Extreme States of Matter, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA;

    Department of Physics, Imperial College, London SW7 2AZ, United Kingdom;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA,Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623, USA,Fusion Science Center for Extreme States of Matter, University of Rochester, Rochester, New York 14623, USA,Department of Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA;

    Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA,Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623, USA,Fusion Science Center for Extreme States of Matter, University of Rochester, Rochester, New York 14623, USA,Department of Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA;

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  • 正文语种 eng
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  • 关键词

    laser-induced magnetic fields in plasmas; macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, rayleigh-taylor, etc.); implosion symmetry and hydrodynamic instability (rayleigh-taylor, richtmyer-meshkov, imprint, etc.); electric and magnetic measurements;

    机译：等离子体中的激光感应磁场;宏观不稳定性（水磁;例如扭结;消防水带;镜子;气球;撕裂;被困粒子;长笛;瑞利泰勒等）;内爆对称性和流体动力不稳定性（瑞利-泰勒;理查德·梅什科夫;印记等）;电磁测量;

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