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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