Inward and outward propagation of the floating potential fluctuations in the plasma edge of the TJ-II stellarator

被引：4

作者：

Pedrosa, M. A. ^{[1
]}

Silva, C. ^{[2
]}

Hidalgo, C. ^{[1
]}

Carralero, D. ^{[1
]}

van Milligen, B. ^{[1
]}

Morera, J. ^{[3
]}

机构：

[1] Asociaci EURATOM CIEMAT, Lab Nacl Fus, Madrid 28040, Spain

[2] Inst Plasmas & Fusao Nucl, Assoc EURATOM IST, Lisbon, Portugal

[3] ITCR, Escuela Fis, Grp Plasmas, San Jose, Costa Rica

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 07期

关键词：

SHEARED FLOW; TOKAMAK; TURBULENCE; TRANSPORT; THRESHOLD; ROTATION; BOUNDARY;

D O I：

10.1088/0029-5515/51/7/073027

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 radial structure of plasma fluctuations has been investigated in the plasma boundary region of the TJ-II stellarator. For density above the threshold for edge-sheared flow development potential fluctuations propagate predominantly radially outwards in the scrape-off-layer side of the shear layer, whereas in the edge region side the radial propagation is predominantly radially inwards with an effective velocity in the order of 1-10 km s(-1). Results suggest that edge-sheared flows play a role as a source of inward and outward propagating plasma potential fluctuations.

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页数：6

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