Nonlinear Electromagnetic Stabilization of Plasma Microturbulence

被引：54
作者：
Whelan, G. G. [1 ]
Pueschel, M. J. [1 ,2 ]
Terry, P. W. [1 ]
机构：
[1] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
[2] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.120.175002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The physical causes for the strong stabilizing effect of finite plasma beta on ion-temperature-gradientdriven turbulence, which far exceeds quasilinear estimates, are identified from nonlinear gyrokinetic simulations. The primary contribution stems from a resonance of frequencies in the dominant nonlinear interaction between the unstable mode, the stable mode, and zonal flows, which maximizes the triplet correlation time and therefore the energy transfer efficiency. A modification to mixing-length transport estimates is constructed, which reproduces nonlinear heat fluxes throughout the examined beta range.
引用
收藏
页数：6
相关论文
共 37 条
  • [21] Wave-particle decorrelation and transport of anisotropic turbulence in collisionless plasmas
    Lin, Z.
    Holod, I.
    Chen, L.
    Diamond, P. H.
    Hahm, T. S.
    Ethier, S.
    [J]. PHYSICAL REVIEW LETTERS, 2007, 99 (26)
  • [22] Subdominant Modes in Zonal-Flow-Regulated Turbulence
    Makwana, K. D.
    Terry, P. W.
    Pueschel, M. J.
    Hatch, D. R.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 112 (09)
  • [23] Role of stable modes in zonal flow regulated turbulence
    Makwana, K. D.
    Terry, P. W.
    Kim, J. -H.
    [J]. PHYSICS OF PLASMAS, 2012, 19 (06)
  • [24] Damped eigenmode saturation in plasma fluid turbulence
    Makwana, K. D.
    Terry, P. W.
    Kim, J. -H.
    Hatch, D. R.
    [J]. PHYSICS OF PLASMAS, 2011, 18 (01)
  • [25] Makwana K. D., 2013, THESIS
  • [26] JET confinement studies and their scaling to high βN, ITER scenarios
    McDonald, D. C.
    Laborde, L.
    DeBoo, J. C.
    Ryter, F.
    Brix, M.
    Challis, C. D.
    de Vries, P.
    Giroud, C.
    Hobirk, J.
    Howell, D.
    Joffrin, E.
    Luce, T. C.
    Mailloux, J.
    Pericoli-Ridolfini, V.
    Sips, A. C. C.
    Thomsen, K.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (12)
  • [27] Nonlinear entropy transfer via zonal flows in gyrokinetic plasma turbulence
    Nakata, M.
    Watanabe, T. -H.
    Sugama, H.
    [J]. PHYSICS OF PLASMAS, 2012, 19 (02)
  • [28] ANALYTICAL THEORIES OF TURBULENCE
    ORSZAG, SA
    [J]. JOURNAL OF FLUID MECHANICS, 1970, 41 : 363 - &
  • [29] Sizing up plasmas using dimensionless parameters
    Petty, C. C.
    [J]. PHYSICS OF PLASMAS, 2008, 15 (08)
  • [30] Stellarator Turbulence: Subdominant Eigenmodes and Quasilinear Modeling
    Pueschel, M. J.
    Faber, B. J.
    Citrin, J.
    Hegna, C. C.
    Terry, P. W.
    Hatch, D. R.
    [J]. PHYSICAL REVIEW LETTERS, 2016, 116 (08)
1234