Loss-cone instabilities for compact fusion reactor and field-reversed configuration

被引：0
|
作者：
Wang, Zhongtian [1 ,2 ]
Li, Huidong [1 ]
Wu, Xueke [1 ]
机构：
[1] Xihua Univ, Sch Sci, Chengdu 610039, Sichuan, Peoples R China
[2] Southwestern Inst Phys, Chengdu 610041, Sichuan, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2019年 / 21卷 / 02期
基金：
中国国家自然科学基金;
关键词：
loss-cone instabilities; linear fusion devices; gyro-kinetic;
D O I：
10.1088/2058-6272/aaead9
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：
Loss-cone instabilities are studied for linear fusion devices. The gyro-kinetic equation for such a configuration is rigorously constructed in terms of action-angle variables by making use of canonical transformation. The dispersion relation, including for the first time, finite bounce frequency is obtained and numerically solved. The loss-cone modes are found near ion-cyclotron frequency. The growth rates are greatly reduced and approaching zero with increasing beta value. The results suggest that loss-cone instabilities are unlikely to be threatening to linear fusion devices since a new longitudinal invariant is found and gives a constraint which helps confinement.
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页数：5
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