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external field

Laser and Particle Beams (1)

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Collimation of hot electron beams by external field from magnetic-flux compression
Yuqiu Gu, Jinqing Yu, Weimin Zhou, Fengjuan Wu, Jian Wang, Hongjie Liu, Leifeng Cao, Baohan Zhang
Journal:

Laser and Particle Beams / Volume 31 / Issue 4 / December 2013

Published online by Cambridge University Press:

20 August 2013, pp. 579-582
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In fast ignition of inertial confinement fusion, hot electron beam is considered to be an appropriate energy source for ignition. However, hot electrons are divergent as they are transporting in over-dense plasma. So collimating the hot electrons becomes one of the most important issues in fast ignition. A method to collimate hot electron beam by external magnetic field is proposed in this paper. The external field can be generated by compressing a seed magnetic field at the stage of laser-driven implosion. This method is confirmed by particle-in-cell simulations. The results show that hot electrons are well collimated by external magnetic field from magnetic-flux compression.