STABILIZATION BY RESISTIVE WALLS AND Q-LIMIT DISRUPTIONS IN TOKAMAKS

被引：39

作者：

BONDESON, A ^{[1
]}

PERSSON, M ^{[1
]}

机构：

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

来源：

NUCLEAR FUSION | 1988年 / 28卷 / 10期

关键词：

Magnetohydrodynamics - Mathematical Models - Plasmas--Heating;

D O I：

10.1088/0029-5515/28/10/016

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：

Stabilization of the M=2/n=1 tearing mode by resistive walls is effective in tokamaks at low-q operation, 2a&le2.6, when the mode rotates quickly compared with the time constant of the wall and with resistive growth times. A sharp stability limit at qa2 results from the loss of wall stabilization when the q=2 surface moves out of the conducting plasma. This stability limit correlates well with the experimentally observed disruptive limit in plasma current. Simulations of wall locking initiating a disruption at the qa=2 limit show very short precursors in comparison with density limit disruptions at high qa.

引用

页码：1887 / 1891

页数：5