Electron internal transport barriers and magnetic topology in the stellarator TJ-II

被引：12

作者：

Estrada, T. ^{[1
]}

Lopez-Bruna, D.

Alonso, A.

Ascasibar, E.

Baciero, A.

Cappa, A.

Castejon, F.

Fernandez, A.

Herranz, J.

Hidalgo, C.

De Pablos, J. L.

Pastor, I.

Sanchez, E.

Sanchez, J.

Krupnik, L.

Chmyga, A. A.

Dreval, N.

Khrebtov, S. M.

Komarov, A. D.

Kozachok, A. S.

Tereshin, V.

机构：

[1] Euratom CIEMAT, Lab Nacl Fus, Madrid 28040, Spain

[2] Kharkov Phys & Technol Inst, Inst Plasma Phys, Ctr Nat Sci, UA-310108 Kharkov, Ukraine

[3] IV Kurchatov Atom Energy Inst, RNC, Inst Nucl Fus, Moscow 123182, Russia

来源：

FUSION SCIENCE AND TECHNOLOGY | 2006年 / 50卷 / 02期

关键词：

plasma physics; transport barriers; stellarators;

D O I：

10.13182/FST06-A1228

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In most helical systems, electron-internal transport barriers (e-ITBs) are observed in electron cyclotron heated (ECH) plasmas with high heating power density. In the stellarator TJ-II, e-ITBs are easily achievable by positioning a low-order rational surface close to the plasma core because this increases the density range in which the e-ITB can form. Experiments with different low-order rationals show a dependence of the threshold density and barrier quality on the order of the rational (3/2, 4/2, 5/3...). In addition, quasi-coherent modes are frequently observed before and/or after the e-ITB phenomenon at the radial location of the transport barrier foot. Such modes vanish as the barrier is fully developed.

引用

页码：127 / 135

页数：9

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