Plasma transport near the separatrix of a magnetic island

被引:36
作者
Hazeltine, RD
Helander, P
Catto, PJ
机构
[1] UKAEA EURATOM FUS ASSOC, CULHAM LAB, ABINGDON OX14 3DB, OXON, ENGLAND
[2] MIT, CTR PLASMA FUS, CAMBRIDGE, MA 02139 USA
关键词
D O I
10.1063/1.872423
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
The simplest nontrivial model of transport across a magnetic island chain in the presence of collisionless streaming along the magnetic field is solved by a Wiener-Hopf procedure. The solution found is valid provided the boundary layer about the island separatrix is narrow compared to the island width. The result demonstrates that when this assumption is satisfied the flattened profile region is reduced by the boundary layer width. The calculation is similar to the recent work by Fitzpatrick [Phys. Plasmas 2, 825 (1995)] but is carried out in the collisionless, rather than the collisional, limit of parallel transport, and determines the plasma parameters on the separatrix self-consistently. (C) 1997 American Institute of Physics.
引用
收藏
页码:2920 / 2927
页数:8
相关论文
共 12 条
[1]   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
[2]   OBSERVATION OF NONLINEAR NEOCLASSICAL PRESSURE-GRADIENT-DRIVEN TEARING MODES IN TFTR [J].
CHANG, Z ;
CALLEN, JD ;
FREDRICKSON, ED ;
BUDNY, RV ;
HEGNA, CC ;
MCGUIRE, KM ;
ZARNSTORFF, MC .
PHYSICAL REVIEW LETTERS, 1995, 74 (23) :4663-4666
[3]  
DEMICHELIS C, 1995, NUCL FUSION, V35, P1133, DOI 10.1088/0029-5515/35/9/I07
[5]   A threshold for excitation of neoclassical tearing modes [J].
Gorelenkov, NN ;
Budny, RV ;
Chang, Z ;
Gorelenkova, MV ;
Zakharov, LE .
PHYSICS OF PLASMAS, 1996, 3 (09) :3379-3385
[6]   EFFECT OF FIELD ASYMMETRY ON NEOCLASSICAL TRANSPORT IN A TOKAMAK [J].
HAZELTINE, RD ;
ROSENBLUTH, MN .
PHYSICS OF FLUIDS, 1972, 15 (12) :2211-2217
[7]  
MUSKHELISHVILI NI, 1953, SINGULAR INTEGRAL EQ, P86
[8]  
Noble B., 1988, METHODS BASED WIENER
[9]   NONLINEAR EVOLUTION OF TEARING MODES IN INHOMOGENEOUS PLASMAS [J].
SMOLYAKOV, AI .
PLASMA PHYSICS AND CONTROLLED FUSION, 1993, 35 (06) :657-687
[10]   Rotation and locking of magnetic islands [J].
Waelbroeck, FL ;
Fitzpatrick, R .
PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1703-1706