The fishbone instability in ASDEX upgrade

被引：33

作者：

Kass, T

Bosch, HS

Hoenen, F

Lackner, K

Maraschek, M

Zohm, H

机构：

[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[2] Forschungszentrum Julich, Julich, Germany

[3] Univ Stuttgart, Inst Plasmaforsch, D-7000 Stuttgart, Germany

来源：

NUCLEAR FUSION | 1998年 / 38卷 / 06期

关键词：

D O I：

10.1088/0029-5515/38/6/303

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：

In ASDEX Upgrade the excitation of the fishbone instability has been experimentally investigated. The initial frequency of the fishbone oscillation scales with the toroidal precession frequency of the fast trapped ions. A new feature: the coupling of the fishbone mode with the edge localized mode (ELM) instability during high-beta discharges, is found. Fishbones occur in ASDEX Upgrade only for beta(fast) = beta(tor)/(1 + tau(E)/tau(sd)) above a certain threshold. It is thus possible to calculate their destabilization regime in terms of global plasma parameters, such as plasma current, plasma density, toroidal magnetic field and central electron temperature.

引用

页码：807 / 819

页数：13

共 17 条

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