Evidence from Numerical Simulations of Transport-Barrier Relaxations in Tokamak Edge Plasmas in the Presence of Electromagnetic Fluctuations

被引：19

作者：

Fuhr, G. ^{[1
]}

Beyer, P. ^{[1
]}

Benkadda, S. ^{[1
]}

Garbet, X. ^{[2
]}

机构：

[1] Univ Aix Marseille 1, France Japan Magnet Fus Lab, CNRS, LIA 336,UMR 6633, F-13397 Marseille 20, France

[2] IRFM, CEA, F-13108 St Paul Les Durance, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.101.195001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of transport barriers in fusion plasmas is studied in the presence of electromagnetic fluctuations. The work is based on numerical simulations using a new three-dimensional electromagnetic fluid turbulence code (EMEDGE3D). In these simulations, the transport-barrier exhibits intermittent relaxation cycles. It is found that magnetic fluctuations have a negligible influence on the relaxation process while the magnetic activity is enhanced during these relaxations, in agreement with experimental observations.

引用

页数：4

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