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.
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页数：6
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共 37 条
  • [1] Nonlinear stability and instability in collisionless trapped electron mode turbulence
    Baver, DA
    Terry, PW
    Gatto, R
    Fernandez, E
    [J]. PHYSICS OF PLASMAS, 2002, 9 (08) : 3318 - 3332
  • [2] Bilato R., 2007, NUCL FUSION, V47, P490
  • [3] A new gyrokinetic quasilinear transport model applied to particle transport in tokamak plasmas
    Bourdelle, C.
    Garbet, X.
    Imbeaux, F.
    Casati, A.
    Dubuit, N.
    Guirlet, R.
    Parisot, T.
    [J]. PHYSICS OF PLASMAS, 2007, 14 (11)
  • [4] Velocity-space resolution, entropy production, and upwind dissipation in Eulerian gyrokinetic simulations
    Candy, J
    Waltz, RE
    [J]. PHYSICS OF PLASMAS, 2006, 13 (03)
  • [5] Beta scaling of transport in microturbulence simulations
    Candy, J
    [J]. PHYSICS OF PLASMAS, 2005, 12 (07) : 1 - 8
  • [6] Validating a quasi-linear transport model versus nonlinear simulations
    Casati, A.
    Bourdelle, C.
    Garbet, X.
    Imbeaux, F.
    Candy, J.
    Clairet, F.
    Dif-Pradalier, G.
    Falchetto, G.
    Gerbaud, T.
    Grandgirard, V.
    Guercan, Oe. D.
    Hennequin, P.
    Kinsey, J.
    Ottaviani, M.
    Sabot, R.
    Sarazin, Y.
    Vermare, L.
    Waltz, R. E.
    [J]. NUCLEAR FUSION, 2009, 49 (08)
  • [7] Electromagnetic stabilization of tokamak microturbulence in a high-β regime
    Citrin, J.
    Garcia, J.
    Goerler, T.
    Jenko, F.
    Mantica, P.
    Told, D.
    Bourdelle, C.
    Hatch, D. R.
    Hogeweij, G. M. D.
    Johnson, T.
    Pueschel, M. J.
    Schneider, M.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2015, 57 (01)
  • [8] Nonlinear Stabilization of Tokamak Microturbulence by Fast Ions
    Citrin, J.
    Jenko, F.
    Mantica, P.
    Told, D.
    Bourdelle, C.
    Garcia, J.
    Haverkort, J. W.
    Hogeweij, G. M. D.
    Johnson, T.
    Pueschel, M. J.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 111 (15)
  • [9] Quasilinear transport modelling at low magnetic shear
    Citrin, J.
    Bourdelle, C.
    Cottier, P.
    Escande, D. F.
    Guercan, Oe D.
    Hatch, D. R.
    Hogeweij, G. M. D.
    Jenko, F.
    Pueschel, M. J.
    [J]. PHYSICS OF PLASMAS, 2012, 19 (06)
  • [10] Gyrokinetic simulation of collisionless trapped-electron mode turbulence
    Dannert, T
    Jenko, F
    [J]. PHYSICS OF PLASMAS, 2005, 12 (07) : 1 - 8
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