中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2097-2104.doi: 10.1088/1009-1963/13/12/021

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

Bootstrap current fraction scaling for spherical torus plasmas

石秉仁   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • 收稿日期:2004-03-11 修回日期:2004-06-22 出版日期:2005-03-17 发布日期:2005-03-17
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10375018).

Bootstrap current fraction scaling for spherical torus plasmas

Shi Bing-Ren (石秉仁)   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:2004-03-11 Revised:2004-06-22 Online:2005-03-17 Published:2005-03-17
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10375018).

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摘要： Dependence of the bootstrap current fraction of spherical torus plasma on the aspect ratio and the triangular deformation is studied by using a simple equilibrium model, the Solov'ev-type equilibrium. Two bootstrap current models are used: one is the single-ion collisionless regime model, the other is the recently developed arbitrary collisional regime model. It is found that besides the well known favourable effect of the small aspect ratio on the enhancement of the bootstrap current fraction, the triangularity is beneficial for raising the total bootstrap current though it does not change its fraction much.

Abstract: Dependence of the bootstrap current fraction of spherical torus plasma on the aspect ratio and the triangular deformation is studied by using a simple equilibrium model, the Solov'ev-type equilibrium. Two bootstrap current models are used: one is the single-ion collisionless regime model, the other is the recently developed arbitrary collisional regime model. It is found that besides the well known favourable effect of the small aspect ratio on the enhancement of the bootstrap current fraction, the triangularity is beneficial for raising the total bootstrap current though it does not change its fraction much.

Key words: spherical torus, bootstrap current, triangular deformation

中图分类号:  (Atomic, molecular, ion, and heavy-particle collisions)

  • 52.20.Hv
52.55.Fa (Tokamaks, spherical tokamaks) 52.25.-b (Plasma properties)