中国物理B ›› 1993, Vol. 2 ›› Issue (2): 81-88.doi: 10.1088/1004-423X/2/2/001

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BALLOONING INSTABILITY IN HIGH β TOKAMAK

林建龙, 石秉仁, 李芳著   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • 收稿日期:1992-05-11 出版日期:1993-02-20 发布日期:1993-02-20

BALLOONING INSTABILITY IN HIGH $\beta$ TOKAMAK

LIN JIAN-LONG (林建龙), SHI BING-REN (石秉仁), LI FANG-ZHU (李芳著)   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:1992-05-11 Online:1993-02-20 Published:1993-02-20

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摘要： In this paper we show that Δ′B is negative over parts of the second region, and that plasmas are stable to Δ′B-driven resistive modes for realistic equilibria in which characteristics of finite-β configurations are retained. We have found that ideal instability is very sensitive to the ratio T=rΔ″/Δ′ in the second region. In comparison with previous works. results obtained by present authors show that the shift gradient Δ′ has a significant stabilizing effect on the second stable boundary, and this effect increases as the shear s becomes larger.

Abstract: In this paper we show that $\Delta$′B is negative over parts of the second region, and that plasmas are stable to $\Delta$′B -driven resistive modes for realistic equilibria in which characteristics of finite-$\beta$ configurations are retained. We have found that ideal instability is very sensitive to the ratio T=r$\Delta$″/$\Delta$′ in the second region. In comparison with previous works. results obtained by present authors show that the shift gradient $\Delta$′ has a significant stabilizing effect on the second stable boundary, and this effect increases as the shear s becomes larger.

中图分类号:  (Tokamaks, spherical tokamaks)

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