Measurement of magnetic island width in long-pulse, high-βN discharges in JT-60U

被引：56

作者：

Isayama, A ^{[1
]}

Kamada, Y ^{[1
]}

Ozeki, T ^{[1
]}

Isei, N ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 3110193, Japan

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 1999年 / 41卷 / 01期

关键词：

D O I：

10.1088/0741-3335/41/1/003

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 magnetic island width during long-pulse, high-BN discharges was evaluated by measuring oscillations of electron cyclotron emission using a heterodyne radiometer. Because of its high spatial resolution of about 2 cm, evolution of the magnetic island structure can be measured in detail. The island width increases with the amplitude of the magnetic fluctuations. The saturated island width was about 7 cm when the min = 3/2 mode appeared. The resistive modes which limit the sustainable BN have typical mode numbers of min = 3/2 and 2/1. The relationship between the observed magnetic island and the neoclassical tearing mode is discussed.

引用

页码：35 / 43

页数：9

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