Zonal-flow dynamics and size scaling of anomalous transport

被引：57

作者：

Chen, L ^{[1
]}

White, RB

Zonca, F

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92717 USA

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

[3] CR Frascati, EURATOM Assoc, ENEA Fus, I-00044 Frascati, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.92.075004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nonlinear equations for the slow space-time evolution of the radial drift-wave envelope and zonal flow amplitude have been self-consistently derived for a model nonuniform tokamak equilibrium within the coherent four-wave drift wave-zonal flow modulation interaction model of Chen, Lin, and White [Phys. Plasmas 7, 3129 (2000)]. Solutions clearly demonstrate turbulence spreading due to nonlinearly enhanced dispersiveness and, consequently, the device-size dependence of the saturated wave intensities and transport coefficients.

引用

页数：4