Influence of energetic ions on tearing modes in a reversed field pinch

被引：8
|
作者：
Cai, Huishan [1 ]
Lin, Liang [2 ]
Ding, Weixing [2 ]
Anderson, J. K. [3 ]
Brower, D. L. [2 ]
机构：
[1] Univ Sci & Technol China, Dept Modern Phys, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[3] Univ Wisconsin, Madison, WI 53706 USA
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2015年 / 57卷 / 02期
基金：
美国国家科学基金会;
关键词：
energetic ions; tearing modes; reversed field pinch; EQUATION;
D O I：
10.1088/0741-3335/57/2/025021
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：
Tearing mode stability analysis in the presence of circulating energetic ions (CEI) is studied in the reversed field pinch (RFP) magnetic configuration. In contrast to the minimal effect of precessional drift of CEI on tearing modes in tokamaks, the effect of precessional drift of CEI on tearing modes is important in the RFP. It is found that the effects of CEI on tearing modes in RFP depend on their toroidal circulating direction, and have a strong relation to the pressure gradient of CEI. For co-CEI, tearing modes can be stabilized if the pressure gradient of energetic ions is sufficiently large, which is qualitatively consistent with experimental results in the Madison Symmetric Torus.
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页数：5
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