DYNAMICS OF THE EDGE TRANSPORT BARRIER AT PLASMA BIASING ON THE CASTOR TOKAMAK

被引：0

作者：

Stockel, J. ^{[1
]}

Spolaore, M. ^{[2
]}

Peleman, P. ^{[3
]}

Brotankova, J. ^{[1
]}

Horacek, J. ^{[1
]}

Dejarnac, R. ^{[1
]}

Devynck, P. ^{[4
]}

Duran, I ^{[1
]}

Gunn, J. P. ^{[3
]}

Hron, M. ^{[1
]}

Kocans, M. ^{[5
]}

Martines, E. ^{[2
]}

Panek, R. ^{[1
]}

Sharma, A. ^{[6
]}

Van Oost, G. ^{[3
]}

机构：

[1] EURATOM IPP CR, Inst Plasma Phys, Prague, Czech Republic

[2] Assoc EURATOM ENEA, Consorzio RFX, Padua, Italy

[3] Univ Ghent, Dept Appl Phys, Ghent, Belgium

[4] EURATOM, CEA Fus Controlee, St Paul Les Durance, France

[5] Comenius Univ, Dept Expt Phys, Bratislava, Slovakia

[6] Univ Oslo, Fac Math & Nat Sci, Oslo, Norway

来源：

PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY | 2006年 / 06期

关键词：

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A clear and reproducible transition to a regime with an improved particle confinement is routinely observed on the CASTOR tokamak, if the biasing electrode is inserted deep enough into the plasma (r/a similar to 0.5) and biased up to +250V. The steepening of the radial profiles of the plasma density and potential demonstrate the formation of a transport barrier just inside the last closed flux surface. Fast relaxations of the edge plasma parameters, with a frequency of about 10 kHz, are observed when the average radial electric field within the barrier prevails values of about 20 kV/m. A detailed analysis of the spatial-temporal behavior of these relaxations is presented.

引用

页码：19 / 23

页数：5

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