Laboratory study of avalanches in magnetized plasmas

被引：15

作者：

Van Compernolle, B. ^{[1
]}

Morales, G. J. ^{[1
]}

Maggs, J. E. ^{[1
]}

Sydora, R. D. ^{[2
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada

来源：

PHYSICAL REVIEW E | 2015年 / 91卷 / 03期

基金：

美国国家科学基金会;

关键词：

SELF-ORGANIZED CRITICALITY; TURBULENT TRANSPORT; CONFINED PLASMA; DYNAMICS; SANDPILES; PARADIGM; TOKAMAKS; SYSTEMS; EVENTS; MODEL;

D O I：

10.1103/PhysRevE.91.031102

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：

It is demonstrated that a novel heating configuration applied to a large and cold magnetized plasma allows the study of avalanche phenomena under controlled conditions. Intermittent collapses of the plasma pressure profile, associated with unstable drift-Alfven waves, exhibit a two-slope power-law spectrum with exponents near -1 at lower frequencies and in the range of -2 to -4 at higher frequencies. A detailed mapping of the spatiotemporal evolution of a single avalanche event is presented.

引用

页数：5

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