Excitation of zonal flow by drift waves in toroidal plasmas

被引：302

作者：

Chen, L ^{[1
]}

Lin, ZH

White, R

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[2] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 2000年 / 7卷 / 08期

关键词：

D O I：

10.1063/1.874222

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：

An analytical dispersion relation is derived which shows that, in toroidal plasmas, zonal flows can be spontaneously excited via modulations in the radial envelope of a single-n coherent drift wave, with n the toroidal mode number. Predicted instability features are verified by three-dimensional global gyrokinetic simulations of the ion-temperature-gradient mode. Nonlinear equations for mode amplitudes demonstrate saturation of the linearly unstable pump wave and nonlinear oscillations of the drift-wave intensity and zonal flows, with a parameter-dependent period doubling route to chaos. (C) 2000 American Institute of Physics. [S1070-664X(00)01208-8].

引用

页码：3129 / 3132

页数：4

共 16 条

[1]

Beer M. A., 1995, Gyrofluid models of turbulent transport in tokamaks

[2] HIGH MODE NUMBER STABILITY OF AN AXISYMMETRIC TOROIDAL PLASMA [J].

CONNOR, JW ;

HASTIE, RJ ;

TAYLOR, JB .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1979, 365 (1720) :1-17

[3]

DIAMOND PH, PLASMA PHYSICS CONTR, P98

[4] Scalings of ion-temperature-gradient-driven anomalous transport in tokamaks [J].

Dimits, AM ;

Williams, TJ ;

Byers, JA ;

Cohen, BI .

PHYSICAL REVIEW LETTERS, 1996, 77 (01) :71-74

[5] NON-LINEAR GYROKINETIC EQUATIONS FOR LOW-FREQUENCY ELECTROMAGNETIC-WAVES IN GENERAL PLASMA EQUILIBRIA [J].

FRIEMAN, EA ;

CHEN, L .

PHYSICS OF FLUIDS, 1982, 25 (03) :502-508

[6]

HASEGAWA A, 1979, PHYS FLUIDS, V22, P2122, DOI 10.1063/1.862504

[7] STATIONARY SPECTRUM OF STRONG TURBULENCE IN MAGNETIZED NONUNIFORM PLASMA [J].

HASEGAWA, A ;

MIMA, K .

PHYSICAL REVIEW LETTERS, 1977, 39 (04) :205-208

[8] Dynamics of axisymmetric (E x B) and poloidal flows in tokamaks [J].

Hinton, FL ;

Rosenbluth, MN .

PLASMA PHYSICS AND CONTROLLED FUSION, 1999, 41 :A653-A662

[9]

HINTON FL, COMMUNICATION

[10] Effects of collisional zonal flow damping on turbulent transport [J].

Lin, Z ;

Hahm, TS ;

Lee, WW ;

Tang, WM ;

Diamond, PH .

PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3645-3648

← 1 2 →