Analytical solutions for global geodesic acoustic modes in tokamak plasmas

被引：14
作者：
Ilgisonis, V. I. [1 ,2 ]
Konoval'tseva, L. V. [2 ]
Lakhin, V. P. [1 ]
Sorokina, E. A. [1 ,2 ]
机构：
[1] Natl Res Ctr Kurchatov Inst, Moscow 123182, Russia
[2] Peoples Friendship Univ Russia, Moscow 117198, Russia
来源：
PLASMA PHYSICS REPORTS | 2014年 / 40卷 / 11期
基金：
俄罗斯基础研究基金会; 俄罗斯科学基金会;
关键词：
N=0 CHIRPING MODE; ZONAL FLOWS; JFT-2M TOKAMAK; EXPLANATION;
D O I：
10.1134/S1063780X14110038
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Analytical solutions for global geodesic acoustic modes in the plasma of a tokamak with circular concentric magnetic surfaces are obtained. In the framework of ideal magnetohydrodynamics, an integral equation for eigenvalues (dispersion relation) taking into account toroidal coupling between electrostatic perturbations and electromagnetic perturbations with the poloidal mode number |m| = 2 is derived. In the absence of such coupling, the dispersion relation yields only the standard continuous spectrum. The existence of a global geodesic acoustic mode is analyzed for equilibria with both on-axis and off-axis maxima of the local geodesic acoustic frequency. The analytical results are compared with results of numerical calculations.
引用
收藏
页码：843 / 854
页数：12
相关论文
共 28 条
  • [1] Explanation of the JET n=0 chirping mode
    Berk, H. L.
    Boswell, C. J.
    Borba, D.
    Figueiredo, A. C. A.
    Johnson, T.
    Nave, M. F. F.
    Pinches, S. D.
    Sharapov, S. E.
    [J]. NUCLEAR FUSION, 2006, 46 (10) : S888 - S897
  • [2] Fast excitation of EGAM by NBI
    Berk, H. L.
    Zhou, T.
    [J]. NUCLEAR FUSION, 2010, 50 (03)
  • [3] Observation and explanation of the JET n=0 chirping mode
    Boswell, C. J.
    Berk, H. L.
    Borba, D. N.
    Johnson, T.
    Pinches, S. D.
    Sharapov, S. E.
    [J]. PHYSICS LETTERS A, 2006, 358 (02) : 154 - 158
  • [4] Frequency scaling and localization of geodesic acoustic modes in ASDEX Upgrade
    Conway, G. D.
    Troester, C.
    Scott, B.
    Hallatschek, K.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (05)
  • [5] Zonal flows in plasma - a review
    Diamond, PH
    Itoh, SI
    Itoh, K
    Hahm, TS
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (05) : R35 - R161
  • [6] Energetic-Particle-Induced Geodesic Acoustic Mode
    Fu, G. Y.
    [J]. PHYSICAL REVIEW LETTERS, 2008, 101 (18)
  • [7] Plasma shaping effects on the geodesic acoustic mode in toroidally axisymmetric plasmas
    Gao, Zhe
    Wang, Ping
    Sanuki, H.
    [J]. PHYSICS OF PLASMAS, 2008, 15 (07)
  • [8] Spatial structure of the geodesic acoustic mode in the FT-2 tokamak by upper hybrid resonance Doppler backscattering
    Gurchenko, A. D.
    Gusakov, E. Z.
    Altukhov, A. B.
    Selyunin, E. P.
    Esipov, L. A.
    Kantor, M. Yu
    Kouprienko, D. V.
    Lashkul, S. I.
    Stepanov, A. Yu
    Wagner, F.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (08)
  • [9] Huang Z., 2013, P 40 EPS C PLASM PHY
  • [10] Observation of the interaction between the geodesic acoustic mode and ambient fluctuation in the JFT-2M tokamak
    Ido, T.
    Miura, Y.
    Hoshino, K.
    Kamiya, K.
    Hamada, Y.
    Nishizawa, A.
    Kawasumi, Y.
    Ogawa, H.
    Nagashima, Y.
    Shinohara, K.
    Kusama, Y.
    [J]. NUCLEAR FUSION, 2006, 46 (05) : 512 - 520
123