Ion-Banana-Orbit-Width Effect on Bootstrap Current for Small Magnetic Islands

被引：1
|
作者：
Qu Honpeng [1 ]
机构：
[1] Southwestern Inst Phys, Chengdu 610041, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2013年 / 15卷 / 09期
基金：
中国国家自然科学基金;
关键词：
NTM; bootstrap current; ion-banana-orbit-width; magnetic island; NEOCLASSICAL TEARING MODES;
D O I：
10.1088/1009-0630/15/9/03
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：
A simple and direct theoretical method has been proposed to investigate the so-called ion-banana-orbit-width (IBW) effect on the bootstrap current in the region of magnetic islands generated by the neoclassical tearing mode (NTM). The result shows that, when the IBW approaches the island width, the (ion) bootstrap current can be partly restored inside the island while the pressure profile is flattened. This can lead to the reduction of the bootstrap current drive on the NTM. The strength of the IBW effect on the NTM is related to the safety factor and the inverse aspect ratio on the rational surface.
引用
收藏
页码：852 / 856
页数：5
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