Neoclassical tearing modes in Tokamak Fusion Test Reactor experiments.: I.: Measurements of magnetic islands and Δ′

被引：36

作者：

Chang, Z ^{[1
]}

Fredrickson, ED ^{[1
]}

Batha, SH ^{[1
]}

Bell, MG ^{[1
]}

Budny, RV ^{[1
]}

Levinton, FM ^{[1
]}

McGuire, KM ^{[1
]}

Taylor, G ^{[1
]}

Zarnstorff, MC ^{[1
]}

机构：

[1] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 1998年 / 5卷 / 04期

关键词：

D O I：

10.1063/1.872627

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：

Tearing-type modes are observed in most high confinement operation regimes in the Tokamak Fusion Test Reactor (TFTR) [Nucl. Fusion 35, 1429 (1995)]. Three different methods are used to measure the magnetic island widths: external magnetic coils, internal temperature fluctuation from electron cyclotron emission (ECE) diagnostics and an experiment where the plasma major radius is rapidly shifted ("Jog" experiments), A good agreement between the three methods is observed. Numerical and analytic calculations of Delta' (the tearing instability index) are compared with an experimental measurement of Delta' using the tearing mode eigenfunction mapped from the jog data. The obtained negative Delta' indicates that the observed tearing modes cannot be explained by the classical current-gradient-driven tearing theory. (C) 1998 American Institute of Physics.

引用

页码：1076 / 1084

页数：9

共 22 条

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