Criteria for second stability for ballooning modes in stellarators

被引：4

作者：

Hudson, SR

Hegna, CC

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[2] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

来源：

PHYSICS OF PLASMAS | 2004年 / 11卷 / 09期

关键词：

D O I：

10.1063/1.1779227

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：

An expression determining how variations in the pressure gradient and average magnetic shear affect ballooning stability for a stellarator equilibrium is presented. The procedure for determining the marginal stability boundaries, for each field line, depends only on the equilibrium and a single ballooning eigenfunction calculation. This information is sufficient to determine if increasing pressure gradient is stabilizing or destabilizing and to predict whether the configuration possesses a second stable region. (C) 2004 American Institute of Physics.

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页码：L53 / L56

页数：4

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