Ion temperature fluctuations in the ASDEX Upgrade scrape-off layer

被引：45

作者：

Kocan, M. ^{[1
]}

Gennrich, F. P. ^{[2
]}

Kendl, A. ^{[2
]}

Mueller, H. W. ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[2] Univ Innsbruck, Assoc Euratom OAW, Inst Ion Phys & Appl Phys, A-6020 Innsbruck, Austria

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2012年 / 54卷 / 08期

基金：

奥地利科学基金会;

关键词：

EDGE TURBULENCE; SOL FLOW; TRANSPORT; PLASMA; BOUNDARY; MODELS;

D O I：

10.1088/0741-3335/54/8/085009

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 ion temperature in turbulent plasma filaments T-i fil is measured by a retarding field analyser during L-mode discharges in the ASDEX Upgrade tokamak. At 2 cm outside the separatrix T-i fil approximate to 80-110 eV, which is 3-4 times that of the background ions and 50-70% of the ion temperature at the separatrix. T-i fil is reproduced by a fluid model of the parallel filament transport assuming the radial filament propagation speed of 400-1000 m s(-1) in the near scrape-off layer, consistent with earlier experimental estimates. The conditional sampling used in experiment to measure T-i fil is tested on artificial time series obtained from a gyrofluid turbulence simulation.

引用

页数：11

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