Effects of negative magnetic shear on toroidicity induced eigenmode instability in tokamaks

被引：2
|
作者：
Rajendran, K
Dong, JQ
Mahajan, SM
机构：
[1] UNIV TEXAS, INST FUS STUDIES, AUSTIN, TX 78712 USA
[2] SW INST PHYS, CHENGDU 610041, PEOPLES R CHINA
来源：
PHYSICS OF PLASMAS | 1997年 / 4卷 / 04期
关键词：
D O I：
10.1063/1.872212
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：
The effects of negative magnetic shear on the toroidicity induced (TI) eigenmode instability are studied with a numerical WKB shooting scheme. The ion temperature gradient (ITG or eta(i)) and the parallel velocity shear (PVS) of the ions are included. It is found that for a given set of plasma parameters, the damping mechanism from a negative magnetic shear is much stronger than it is from a positive shear of equal magnitude. The effects of PVS on TI modes are demonstrated to be destabilizing. (C) 1997 American Institute of Physics.
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收藏
页码：908 / 910
页数：3
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