The E x B staircase of magnetised plasmas

被引：63

作者：

Dif-Pradalier, G. ^{[1
]}

Hornung, G. ^{[2
]}

Garbet, X. ^{[1
]}

Ghendrih, Ph. ^{[1
]}

Grandgirard, V. ^{[1
]}

Latu, G. ^{[1
]}

Sarazin, Y. ^{[1
]}

机构：

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

[2] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

来源：

NUCLEAR FUSION | 2017年 / 57卷 / 06期

基金：

美国国家科学基金会;

关键词：

turbulence; self-organisation; magnetised plasma; SELF-ORGANIZED CRITICALITY; GYROKINETIC SIMULATIONS; TURBULENCE; TRANSPORT; DYNAMICS; CONFINEMENT; DRIVEN; TRANSITION; MODELS; FLUID;

D O I：

10.1088/1741-4326/aa6873

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：

We show that a class of near-marginal and low-collisional magnetised plasmas naturally evolve into a globally organised state dubbed the 'ExB staircase'. A key signature of this self-organised state is the containment of avalanche activity, detrimental for confinement, by a series of microbarriers for transport, the staircase steps, beneficial for confinement. Conditions for existence of the ExB staircase, impact on transport and confinement and robustness in parameter space are discussed.

引用

页数：20

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