Collisionality dependence of the polarization current caused by a rotating magnetic island

被引:22
作者
Bergmann, A [1 ]
Poli, E [1 ]
Peeters, AG [1 ]
机构
[1] Max Planck Inst Plasma Phys, IPP EURATOM Assoc, D-85748 Garching, Germany
关键词
D O I
10.1063/1.1937338
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 effect of collisions on the polarization current caused by a rotating island in a Tokamak plasma is studied with guiding center particle simulations. The simulations are performed with a delta f code which includes a Monte Carlo model for Coulomb collisions. The transition between the two limiting cases of low and high collision frequency nu (compared to the island rotation frequency omega) is found to occur at nu approximate to omega in agreement with a recent analytic theory. (C) 2005 American Institute of Physics.
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页码:1 / 6
页数:6
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