Mechanism of neoclassical tearing modes triggering by a magnetic perturbation

被引：10

作者：

Arcis, N. ^{[1
]}

Sharapov, S. E. ^{[1
]}

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 36期

基金：

英国工程与自然科学研究理事会;

关键词：

neoclassical tearing modes; seed island; toroidal mode coupling; polarization current;

D O I：

10.1016/j.physleta.2008.07.028

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new mechanism whereby Neoclassical Tearing Modes (NTMs) can be triggered through toroidal mode coupling to a magnetic perturbation is proposed. The physical picture is the presence of a relatively small "pre-NTM" magnetic island whose frequency is modified by the perturbation, changing polarization current effects from stabilizing to destabilizing. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：5807 / 5810

页数：4

共 34 条

[1] Rigorous approach to the nonlinear saturation of the tearing mode in cylindrical and slab geometry [J].

Arcis, N. ;

Escande, D. F. ;

Ottaviani, M. .

PHYSICS OF PLASMAS, 2006, 13 (05)

[2] Nonlinear dynamics of the tearing mode for any current gradient [J].

Arcis, N ;

Escande, DF ;

Ottaviani, M .

PHYSICS LETTERS A, 2005, 347 (4-6) :241-247

[3] A mechanism for tearing onset near ideal stability boundaries [J].

Brennan, DP ;

La Haye, RJ ;

Turnbull, AD ;

Chu, MS ;

Jensen, TH ;

Lao, LL ;

Luce, TC ;

Politzer, PA ;

Strait, EJ ;

Kruger, SE ;

Schnack, DD .

PHYSICS OF PLASMAS, 2003, 10 (05) :1643-1652

[4] Tearing mode stability studies near ideal stability boundaries in DIII-D [J].

Brennan, DP ;

Strait, EJ ;

Turnbull, AD ;

Chu, MS ;

La Haye, RJ ;

Luce, TC ;

Taylor, TS ;

Kruger, S ;

Pletzer, A .

PHYSICS OF PLASMAS, 2002, 9 (07) :2998-3006

[5] Onset of neoclassical tearing modes on JET [J].

Buttery, RJ ;

Hender, TC ;

Howell, DF ;

La Haye, RJ ;

Sauter, O ;

Testa, D .

NUCLEAR FUSION, 2003, 43 (02) :69-83

[6] ISLAND BOOTSTRAP CURRENT MODIFICATION OF THE NONLINEAR DYNAMICS OF THE TEARING MODE [J].

CARRERA, R ;

HAZELTINE, RD ;

KOTSCHENREUTHER, M .

PHYSICS OF FLUIDS, 1986, 29 (04) :899-902

[7] The role of polarization current in magnetic island evolution [J].

Connor, JW ;

Waelbroeck, FL ;

Wilson, HR .

PHYSICS OF PLASMAS, 2001, 8 (06) :2835-2848

[8] The influence of the ion polarization current on magnetic island stability in a tokamak plasma [J].

Fitzpatrick, R. ;

Waelbroeck, F. L. ;

Militello, F. .

PHYSICS OF PLASMAS, 2006, 13 (12)

[9] HELICAL TEMPERATURE PERTURBATIONS ASSOCIATED WITH TEARING MODES IN TOKAMAK PLASMAS [J].

FITZPATRICK, R .

PHYSICS OF PLASMAS, 1995, 2 (03) :825-838

[10] INTERACTION OF TEARING MODES WITH EXTERNAL STRUCTURES IN CYLINDRICAL GEOMETRY [J].

FITZPATRICK, R .

NUCLEAR FUSION, 1993, 33 (07) :1049-1084

← 1 2 3 4 →