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

Generation of plasma current under arbitrary strong direct current electric field

Weng Su-Ming Sheng Zheng-Ming Zhang Jie

Generation of plasma current under arbitrary strong direct current electric field

Weng Su-Ming, Sheng Zheng-Ming, Zhang Jie
PDF
Get Citation
Metrics
  • Abstract views:  3225
  • PDF Downloads:  1207
  • Cited By: 0
Publishing process
  • Received Date:  31 July 2008
  • Accepted Date:  23 September 2008
  • Published Online:  20 December 2009

Generation of plasma current under arbitrary strong direct current electric field

  • 1. (1)中国科学院物理研究所,北京凝聚态物理国家实验室,北京 100190; (2)中国科学院物理研究所,北京凝聚态物理国家实验室,北京 100190;上海交通大学物理系,上海 200240

Abstract: The generation of plasma current and the evolution of electron distribution under arbitrarily strong direct current electric fields have been studied by Fokker-Planck simulation. It is found that the behaviors of plasma are different under different fields: in the weak field, Spitzer’s law is suitable for describing the relationship between plasma current and electric field, and the response time to generate current is approximately equal to the relaxation time to reduce current after switching off the electric field; in the moderate field, the electron distribution is well represented by the sum of a stationary and drifting Maxwellian, and the relaxation time is much longer than the response time. According to the detailed knowledge of electron distributions, a set of hydrodynamic-like equations, similar to Spitzer’s but without the weak-field limit, is given for calculating the current. It is more suitable for application in hybrid particle-in-cell simulations.

Catalog

    /

    返回文章
    返回