Sheared slab ηi instability in tokamak plasma with negative magnetic shear

被引：12

作者：

Li, JQ

Huang, L

Qu, WX

机构：

[1] China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China

[2] SW Inst Phys, Chengdu 610041, Sichuan, Peoples R China

来源：

PHYSICS OF PLASMAS | 1998年 / 5卷 / 04期

关键词：

D O I：

10.1063/1.872664

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 sheared slab eta(i) instability is reconsidered in tokamak plasma with negative magnetic shear. A modified sheared slab model is presented to include both the magnetic shear and its variation with the magnetic surface. The results show that the slow variation of magnetic shear can aggravate the sheared slab eta(i) instability in the region near the minimum-q magnetic surface and that it has a weak stabilizing role in the plasma core near the axis. However, when the effect of the variation of magnetic shear increases, it can give rise to a stronger slab eta(i) instability. In addition, a linear mode coupling mechanism could be mediated by the variation of magnetic shear with a magnetic surface. (C) 1998 American Institute of Physics.

引用

页码：959 / 965

页数：7

共 26 条

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