Canonical profiles in tokamak plasmas with an arbitrary cross section

被引：16

作者：

Dnestrovskij, YN ^{[1
]}

Dnestrovskij, AY ^{[1
]}

Lysenko, SE ^{[1
]}

Cherkasov, SV ^{[1
]}

机构：

[1] Russian Res Ctr, Kurchatov Inst, Nucl Fus Inst, Moscow 123182, Russia

来源：

PLASMA PHYSICS REPORTS | 2002年 / 28卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1520282

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：

Two principles are used to determine a canonical profile: the principle of the minimum of free plasma energy with the constraint that the total current is conserved and the principle of profile consistency. A second-order differential equation for the canonical profile of the function mu = 1/q is deduced in the natural coordinate system. Soft and hard boundary conditions are proposed to find an unambiguous solution to this equation. The range of their applicability is discussed. Numerical calculations show that the half-width of the canonical profile increases with decreasing aspect ratio, increasing plasma elongation, and decreasing q(a) value. The canonical profiles obtained make it possible to determine the critical gradients for the heat and particle fluxes in transport models. (C) 2002 MAIK "Nauka/Interperiodica".

引用

页码：887 / 899

页数：13

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