Resistive interchange modes in negative central shear tokamaks with peaked pressure profiles

被引：77

作者：

Chu, MS

Greene, JM

Lao, LL

Miller, RL

Bondeson, A

Sauter, O

Rice, BW

Strait, EJ

Taylor, TS

Turnbull, AD

机构：

[1] CHALMERS UNIV TECHNOL,INST ELECTROMAGNET FIELD THEORY,S-41296 GOTHENBURG,SWEDEN

[2] EURATOM,CRPP EPFL,LAUSANNE,SWITZERLAND

[3] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.77.2710

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Resistive interchange modes can be driven unstable by large pressure gradients in the negative central magnetic shear (NCS) region of advanced tokamaks. Localized stability analysis reveals that the resistive interchange stability criterion (D-R less than or equal to 0) is violated in this region, and unstable n = 1 localized resistive magnetohydrodynamic (MHD) modes are computed using the resistive MHD code MARS. In DIII-D NCS plasmas, these instabilities appear as bursting MHD activities, constituting the first identification of resistive interchange in a high temperature tokamak experiment. These bursts also appear to play a role in triggering disruptions.

引用

页码：2710 / 2713

页数：4

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