Excitation of the axisymmetric Alfven eigenmodes by micro-turbulence

被引：2
|
作者：
Marchenko, V. S. [1 ]
Reznik, S. N. [1 ]
机构：
[1] Inst Nucl Res, Prospekt Nauki 47, UA-03680 Kiev, Ukraine
来源：
PHYSICS OF PLASMAS | 2020年 / 27卷 / 11期
关键词：
FREQUENCY MODES;
D O I：
10.1063/5.0022748
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：
Electrostatic, short-wavelength ( k theta rho s > 1, with rho (s) being the ion sound Larmor radius) micro-turbulence, which is present at the plasma edge due to its intrinsic immunity to equilibrium ExB shear suppression, can drive global, axisymmetric [ n = 0 , m = +/- 1, with n(m) being the toroidal (poloidal) mode number] Alfven eigenmode (GAE) with the inertial layer located at the plasma edge, i.e., in the turbulent zone. The excitation mechanism is the modulation instability induced by turbulent Reynolds stress. The growth rate of this instability can overcome GAE continuum damping.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Structures of the low frequency Alfven continuous spectrum and their consequences on MHD and micro-turbulence
    Zonca, F.
    Chen, L.
    THEORY OF FUSION PLASMAS, 2008, 1069 : 355 - +
  • [2] EXCITATION OF TOROIDAL ALFVEN EIGENMODES IN TFTR
    WONG, KL
    FONCK, RJ
    PAUL, SF
    ROBERTS, DR
    FREDRICKSON, ED
    NAZIKIAN, R
    PARK, HK
    BELL, M
    BRETZ, NL
    BUDNY, R
    COHEN, S
    HAMMETT, GW
    JOBES, FC
    MEADE, DM
    MEDLEY, SS
    MUELLER, D
    NAGAYAMA, Y
    OWENS, DK
    SYNAKOWSKI, EJ
    PHYSICAL REVIEW LETTERS, 1991, 66 (14) : 1874 - 1877
  • [3] Wavenumber spectrum of micro-turbulence in tokamak plasmas
    Vermare, L.
    Guercan, Oe. D.
    Hennequin, P.
    Honore, C.
    Garbet, X.
    Giacalone, J. C.
    Sabot, R.
    Clairet, F.
    COMPTES RENDUS PHYSIQUE, 2011, 12 (02) : 115 - 122
  • [4] Impact of collisionality on fluctuation characteristics of micro-turbulence
    Vermare, L.
    Hennequin, P.
    Guercan, Oe. D.
    Bourdelle, C.
    Clairet, F.
    Garbet, X.
    Sabot, R.
    PHYSICS OF PLASMAS, 2011, 18 (01)
  • [5] Exploring Micro-Turbulence in Emission and Absorption in AGN
    Kraemer, S. B.
    Crenshaw, D. M.
    Bottorff, M. C.
    Turner, T. J.
    Miller, L.
    AGN WINDS IN CHARLESTON, 2012, 460 : 57 - +
  • [6] Excitation of beta Alfven eigenmodes in Tore-Supra
    Nguyen, C.
    Garbet, X.
    Sabot, R.
    Eriksson, L-G
    Goniche, M.
    Maget, P.
    Basiuk, V.
    Decker, J.
    Elbeze, D.
    Huysmans, G. T. A.
    Macor, A.
    Segui, J-L
    Schneider, M.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2009, 51 (09)
  • [7] Excitation of toroidally localized harmonics of global Alfven eigenmodes
    Fredrickson, E. D.
    NUCLEAR FUSION, 2023, 63 (07)
  • [8] Excitation of low frequency Alfven eigenmodes in toroidal plasmas
    Liu, Yaqi
    Lin, Zhihong
    Zhang, Huasen
    Zhang, Wenlu
    NUCLEAR FUSION, 2017, 57 (11)
  • [9] EXCITATION OF GLOBAL EIGENMODES OF THE ALFVEN-WAVE IN TOKAMAKS
    APPERT, K
    GRUBER, R
    TROYON, F
    VACLAVIK, J
    PLASMA PHYSICS AND CONTROLLED FUSION, 1982, 24 (09) : 1147 - 1159
  • [10] Excitation of the beta-induced Alfven eigenmodes by a magnetic island
    Marchenko, V. S.
    Reznik, S. N.
    NUCLEAR FUSION, 2009, 49 (02)
12345