Intermittency of plasma edge fluctuation data:: Multifractal analysis

被引：69

作者：

Carreras, BA ^{[1
]}

Lynch, VE

Newman, DE

Balbín, R

Bleuel, J

Pedrosa, MA

Endler, M

van Milligen, B

Sánchez, E

Hidalgo, C

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Univ Alaska, Dept Phys, Fairbanks, AK 99775 USA

[3] Asociac Euratom Ciemat, Madrid 28040, Spain

[4] Max Planck Inst Plasma Phys, Euratom Assoc, D-85740 Garching, Germany

来源：

PHYSICS OF PLASMAS | 2000年 / 7卷 / 08期

关键词：

D O I：

10.1063/1.874193

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：

Plasma edge fluctuations show a degree of intermittency similar to fluid turbulence. Using fluctuation measurements obtained with Langmuir probe data from two confinement devices, it is shown that plasma fluctuations have a multifractal character over the fluctuation range of scales with intermittency levels comparable to the levels measured in neutral fluid turbulence. In the mesoscale range, that is, for time scales between 10 times the turbulence decorrelation time and plasma confinement time, plasma fluctuations have a structure closer to a monofractal with very low intermittency. (C) 2000 American Institute of Physics. [S1070-664X(00)00308-6].

引用

页码：3278 / 3287

页数：10

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