Dynamic transport study of the plasmas with transport improvement in LHD and JT-60U

被引：15

作者：

Ida, K. ^{[1
]}

Sakamoto, Y. ^{[2
]}

Inagaki, S. ^{[1
]}

Takenaga, H. ^{[2
]}

Isayama, A. ^{[2
]}

Matsunaga, G. ^{[2
]}

Sakamoto, R. ^{[1
]}

Tanaka, K. ^{[1
]}

Ide, S. ^{[2
]}

Fujita, T. ^{[1
]}

Funaba, H. ^{[1
]}

Kubo, S. ^{[1
]}

Yoshinuma, M. ^{[1
]}

Shimozuma, T. ^{[1
]}

Takeiri, Y. ^{[1
]}

Ikeda, K. ^{[1
]}

Michael, C. ^{[1
]}

Tokuzawa, T. ^{[1
]}

机构：

[1] Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[2] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan

来源：

NUCLEAR FUSION | 2009年 / 49卷 / 01期

关键词：

REVERSED SHEAR PLASMAS; EDGE ELECTRIC-FIELD; H-L TRANSITIONS; BARRIERS; CONFINEMENT;

D O I：

10.1088/0029-5515/49/1/015005

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：

Transport analysis during the transient phase of heating (a dynamic transport study) applied to the plasma with internal transport barriers (ITBs) in the Large Helical Device (LHD) heliotron and the JT-60U tokamak is described. In the dynamic transport study the time of transition from the L-mode plasma to the ITB plasma is clearly determined by the onset of flattening of the temperature profile in the core region and a spontaneous phase transition from a zero curvature ITB (hyperbolic tangent shaped ITB) or a positive curvature ITB (concaved shaped ITB) to a negative curvature ITB (convex shaped ITB) and its back-transition are observed. The flattening of the core region of the ITB transition and the back-transition between a zero curvature ITB and a convex ITB suggest the strong interaction of turbulent transport in space.

引用

页数：7

共 26 条

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