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核聚变与等离子体物理 ›› 2007, Vol. 27 ›› Issue (4): 296-300.

• 研究报告 • 上一篇    下一篇

电子回旋波在热等离子体中的功率沉积

彭晓炜,龚学余,刘文艳,刘 燕,尹陈艳   

  1. (南华大学核科学技术学院,衡阳 421001)
  • 出版日期:2007-12-15 发布日期:2011-05-30
  • 作者简介:彭晓炜(1978-),男,河北衡水人,南华大学核科学技术学院博士,从事托卡马克中非感应电流驱动研究。
  • 基金资助:

    国家自然科学基金资助项目(10275032,10475039)

Power deposition of electron cyclotron waves in hot plasmas

PENG Xiao-wei, GONG Xue-yu, LIU Wen-yan, LIU Yan, YIN Chen-yan   

  1. (School of Nuclear Science and Technology, University of South China, Hengyang 421001)
  • Online:2007-12-15 Published:2011-05-30

摘要:

用有限拉莫尔半径(FLR)修正的相对论色散关系进行了数值模拟,研究了电子回旋波在高温、高密等离子体的功率沉积,并将计算结果与应用弱相对论Fokker-Planck方程得到的结果进行了比较。结果表明,在高温、高密等离子体中,波功率的吸收非常集中;平行折射率、极向发射位置和发射波频率的变化都会影响波功率沉积的大小和分布;平行折射率变大后,FLR效应会使波的阻尼减少。

关键词: 电子回旋波, 热等离子体, 色散关系, 功率沉积

Abstract:

The power deposition of electron cyclotron waves in hot and dense plasmas is investigated by solving the relativistic dispersion relation with finite Larmor radius corrections, and the results are compared with those gained from weak relativistic Fokker-Planck equation. It is shown that the wave deposition profile in hot and dense plasmas is rather narrow, and the magnitude and profile of power deposition are affected by change of parallel refractive index, poloidal launching location and wave frequency. As the parallel refractive index turns to large, wave damping will decrease due to the FLR effect.

Key words: Electron cyclotron wave, Hot plasmas, Dispersion relation, Power deposition

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