中国物理B ›› 2013, Vol. 22 ›› Issue (11): 115203-115203.doi: 10.1088/1674-1056/22/11/115203

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

Drift-wave fluctuation in an inviscid tokamak plasma

杨建荣a b, 毛杰健a, 唐晓艳b   

  1. a Department of Physics and Electronics, Shangrao Normal University, Shangrao 334001, China;
    b Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
  • 收稿日期:2013-04-01 修回日期:2013-06-20 出版日期:2013-09-28 发布日期:2013-09-28
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10905038, 11275123, and 11365017), the National ITER Plans Program of China (Grant No. 2009GB105002), and the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 2008GZS0045 and 2009GZW0026).

Drift-wave fluctuation in an inviscid tokamak plasma

Yang Jian-Rong (杨建荣)a b, Mao Jie-Jian (毛杰健)a, Tang Xiao-Yan (唐晓艳)b   

  1. a Department of Physics and Electronics, Shangrao Normal University, Shangrao 334001, China;
    b Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2013-04-01 Revised:2013-06-20 Online:2013-09-28 Published:2013-09-28
  • Contact: Tang Xiao-Yan E-mail:xytang@sjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10905038, 11275123, and 11365017), the National ITER Plans Program of China (Grant No. 2009GB105002), and the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 2008GZS0045 and 2009GZW0026).

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摘要： In order to describe the characterization of resistive drift-wave fluctuation in a tokamak plasma, a coupled inviscid two-dimensional Hasegawa–Wakatani model is investigated. Two groups of new analytic solutions with and without phase shift between the fluctuant density and the fluctuant potential are obtained by using the special function transformation method. It is demonstrated that the fluctuant potential shares similar spatio–temporal variations with the density. It is found from the solutions without phase shift that the effect of the diffusion and adiabaticity on the fluctuant density is quite complex, and that the fluctuation may be controlled through the adiabaticity and diffusion. By using the typical parameters in the quasi-adiabatic regime in the solutions with phase shift, it is shown that the density gradient becomes larger as the contours become dense toward the plasma edge and the contours have irregular structures, which reveal the nonuniform distribution in the tokamak edge.

关键词: tokamak plasma, Hasegawa–Wakatani model, drift-wave fluctuation

Abstract: In order to describe the characterization of resistive drift-wave fluctuation in a tokamak plasma, a coupled inviscid two-dimensional Hasegawa–Wakatani model is investigated. Two groups of new analytic solutions with and without phase shift between the fluctuant density and the fluctuant potential are obtained by using the special function transformation method. It is demonstrated that the fluctuant potential shares similar spatio–temporal variations with the density. It is found from the solutions without phase shift that the effect of the diffusion and adiabaticity on the fluctuant density is quite complex, and that the fluctuation may be controlled through the adiabaticity and diffusion. By using the typical parameters in the quasi-adiabatic regime in the solutions with phase shift, it is shown that the density gradient becomes larger as the contours become dense toward the plasma edge and the contours have irregular structures, which reveal the nonuniform distribution in the tokamak edge.

Key words: tokamak plasma, Hasegawa–Wakatani model, drift-wave fluctuation

中图分类号:  (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))

  • 52.35.Mw
52.35.Kt (Drift waves) 52.25.-b (Plasma properties)