NONLINEAR HYBRID SIMULATION OF THE TOROIDICITY-INDUCED ALFVEN EIGENMODE

被引：67

作者：

FU, GY

PARK, W

机构：

[1] Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.74.1594

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Gyrokinetic-magnetohydrodynamic hybrid simulations have been carried out to study the nonlinear saturation of the torodicity-induced Alfvén eigenmode driven by energetic particles in a tokamak plasma. It is shown that wave-particle trapping is the nonlinear saturation mechanism for the parameters considered. The corresponding density profile flattening of the hot particles is observed. The saturation amplitude is proportional to the square of the linear growth rate. In addition, a new n=1, m=0 global Alfvén eigenmode is shown to be excited by the energetic particles. © 1995 The American Physical Society.

引用

页码：1594 / 1596

页数：3

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