Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Self-focus and transmission of relativistic electron beam in a dynamically loaded plasma

Su Dong Tang Chang-Jian

Self-focus and transmission of relativistic electron beam in a dynamically loaded plasma

Su Dong, Tang Chang-Jian
PDF
Get Citation
Metrics
  • Abstract views:  1478
  • PDF Downloads:  501
  • Cited By: 0
Publishing process
  • Received Date:  23 March 2011
  • Accepted Date:  18 May 2011
  • Published Online:  15 April 2012

Self-focus and transmission of relativistic electron beam in a dynamically loaded plasma

  • 1. The Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu 610064, China
Fund Project:  Project supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2009GB105003).

Abstract: In order to further study the radiation of the relativistic electron beam-ion channel experimentally and theoretically, the propagation of a relativistic electron beam in neutral gas and its self-focusing process are investigated. Particle in cell (PIC) simulation shows that the electron beam can self-focus and transmit the dynamically loaded plasma through impact ionization. The transverse and the longitude inhomogeneities of the ion background have significant effects on the transport properties of the electron beam. Base on these researches, a model of transmission of electron beam in a transverse non-uniform ion background is supposed. And the condition of self-focus is given. The numerical results show that the transverse inhomogeneity will lead to the mixed phase transmission of the electron beam, and the inner electrons can defocus near the focus point, which is consistent with the PIC simulation. The PIC simulation also shows that due to the self-focusing of the electron beam, there are much more ions to be ionized at the focus point, which will capture the lower-energy electrons after collision, the capture electron effect will significantly reduce the efficiency of the transmission of the electron beam. But the distribution of the captured electrons in the longitude direction is quasi-periodic, which acts as the electrostatic Wiggler field. These may achieve the dynamical loading of the electrostatic Wiggler field. These results give new clues to the further study of electron beam-plasma system in experiment and the establishment of theoretical models.

Reference (20)

Catalog

    /

    返回文章
    返回