中国物理B ›› 2014, Vol. 23 ›› Issue (1): 15202-015202.doi: 10.1088/1674-1056/23/1/015202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Growth rate of peeling mode in the near separatrix region of diverted tokamak plasma

石秉仁   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • 收稿日期:2013-04-26 修回日期:2013-05-23 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2009GB101002).

Growth rate of peeling mode in the near separatrix region of diverted tokamak plasma

Shi Bing-Ren (石秉仁)   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:2013-04-26 Revised:2013-05-23 Online:2013-11-12 Published:2013-11-12
  • Contact: Shi Bing-Ren E-mail:shibr@swip.ac.cn
  • Supported by:
    Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2009GB101002).

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摘要： An analytical expression of the peeling mode in the near separatrix region of diverted tokamak plasma is derived. It is shown that in diverted plasmas both with single and double X points, though the perturbed potential energy of the unstable peeling mode tends to be large, its growth rate becomes very small due to the even larger kinetic energy. Compared to some recent studies that give qualitatively correct results about this growth rate, our result is directly related with the diverted equilibrium quantities suitable for application to realistic experiments.

关键词: diverted plasma, tokamak pedestal, growth rate of peeling mode

Abstract: An analytical expression of the peeling mode in the near separatrix region of diverted tokamak plasma is derived. It is shown that in diverted plasmas both with single and double X points, though the perturbed potential energy of the unstable peeling mode tends to be large, its growth rate becomes very small due to the even larger kinetic energy. Compared to some recent studies that give qualitatively correct results about this growth rate, our result is directly related with the diverted equilibrium quantities suitable for application to realistic experiments.

Key words: diverted plasma, tokamak pedestal, growth rate of peeling mode

中图分类号:  (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))

  • 52.35.Py
52.55.Fa (Tokamaks, spherical tokamaks)