Effects of circulating energetic ions on sawtooth oscillations

被引：105

作者：

Wang, SJ ^{[1
]}

Ozeki, T

Tobita, K

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[2] Japan Atom Energy Res Inst, Naka Fus Res Estab, Ibaraki 3110193, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.88.105004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In contrast to the well-known result that the effects of the trapped energetic ions (TEI) on the internal kink mode are due to the toroidal precession of the TEI, it is found that the effects of the circulating energetic ions (CEI) on sawtooth are due to the toroidal circulation of the CEI. The effects of the CEI on sawtooth oscillations are found to be different from the well-known purely stabilizing effects of the TEI on sawtooth oscillations; the toroidal circulation of the co-CEI provides an additional sink of free energy and stabilizes the mode; the toroidal circulation of the counter-CEI provides an additional source of free energy and destabilizes the mode.

引用

页数：4

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