AN INVESTIGATION OF BEAM DRIVEN ALFVEN INSTABILITIES IN THE DIII-D TOKAMAK

被引：267
|
作者：
HEIDBRINK, WW [1 ]
STRAIT, EJ [1 ]
DOYLE, E [1 ]
SAGER, G [1 ]
SNIDER, RT [1 ]
机构：
[1] UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92717
来源：
NUCLEAR FUSION | 1991年 / 31卷 / 09期
关键词：
D O I：
10.1088/0029-5515/31/9/002
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：
Neutral beams were injected into low field (B = 0.7-1.0 T) deuterium plasmas in an attempt to destabilize toroidicity induced Alfven eigenmodes (TAE modes). When the parallel beam velocity approached the Alfven velocity and the volume averaged beam beta exceeded 2%, localized, propagating modes with n = 2-10 were observed. As much as 45% of the beam power was lost as a result of the modes. The threshold for TAE instability is at least one order of magnitude higher than that predicted by Fu and VanDam (Phys. Fluids B 1 (1989) 1949).
引用
收藏
页码：1635 / 1648
页数：14
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