中国物理B ›› 2000, Vol. 9 ›› Issue (7): 523-527.doi: 10.1088/1009-1963/9/7/010

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CRITICAL MAGNETIC SHEAR FOR THE TOKAMAK IDEAL INTERNAL KINK MODE IN THE ION KINETIC REGIME

石秉仁, 龙永兴, 隋国芳, 李继全   

  1. Southwesttern Institute of Physics, P. O. Box 432, Chengdu 610041, China
  • 收稿日期:1999-09-05 修回日期:2000-02-14 出版日期:2000-07-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19705004).

CRITICAL MAGNETIC SHEAR FOR THE TOKAMAK IDEAL INTERNAL KINK MODE IN THE ION KINETIC REGIME

Shi Bing-ren (石秉仁), Long Yong-xing (龙永兴), Sui Guo-fang (隋国芳), Li Ji-quan (李继全)   

  1. Southwesttern Institute of Physics, P. O. Box 432, Chengdu 610041, China
  • Received:1999-09-05 Revised:2000-02-14 Online:2000-07-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19705004).

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摘要： It is shown that for the ideal internal kink mode of tokamak plasma, there exists a critical magnetic shear s0c for its excitation when the finite ion Larmor radius effect is considered in the mode singular layer. This can be related to the sudden onset of the sawtooth and also to the stabilization of the sawtooth by the trapped hot ions observed experimentally. The alpha particle effect on this mode is revisited and some new results are reported.

Abstract: It is shown that for the ideal internal kink mode of tokamak plasma, there exists a critical magnetic shear s0c for its excitation when the finite ion Larmor radius effect is considered in the mode singular layer. This can be related to the sudden onset of the sawtooth and also to the stabilization of the sawtooth by the trapped hot ions observed experimentally. The alpha particle effect on this mode is revisited and some new results are reported.

Key words: ideal internal kink, critical magnetic shear, sawtooth stabilization

中图分类号:  (Plasma kinetic equations)

  • 52.25.Dg
52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.)) 52.55.Fa (Tokamaks, spherical tokamaks)