Stabilization of interchange modes by rotating magnetic fields

被引:28
作者
Guo, HY [1 ]
Hoffman, AL [1 ]
Milroy, RD [1 ]
Miller, KE [1 ]
Votroubek, GR [1 ]
机构
[1] Univ Washington, Redmond Plasma Phys Lab, Seattle, WA 98195 USA
关键词
D O I
10.1103/PhysRevLett.94.185001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Interchange modes have been a key limiting instability for many magnetic confinement fusion configurations. In previous studies intended to deal with these ubiquitous instabilities, complex, transport enhancing, minimum-B producing coils were added to the otherwise simple linear mirror plasma. Possible solutions for returning to a simple symmetric mirror configuration, such as ponderomotive fields, are weak and difficult to apply. A new method is demonstrated here for the first time, utilizing rotating magnetic fields that are simple to apply and highly effective. A simple and easily comprehensible theory has also been developed to explain the remarkable stabilizing properties. Although this work has been performed on field reversed configurations, it should have a wide application to other confinement schemes, and could become a cornerstone for high-β plasma stability.
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页码:1 / 4
页数:4
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