CONFINEMENT DEGRADATION AND ENHANCED MICROTURBULENCE AS LONG-TIME PRECURSORS TO HIGH-DENSITY-LIMIT TOKAMAK DISRUPTIONS

被引：26

作者：

BROWER, DL

YU, CX

BRAVENEC, RV

LIN, H

LUHMANN, NC

PEEBLES, WA

RITZ, CP

SMITH, BA

WOOTTON, AJ

ZHANG, ZM

ZHAO, SJ

机构：

[1] UNIV CALIF LOS ANGELES,INST PLASMA & FUS RES,LOS ANGELES,CA 90024

[2] UNIV TEXAS,FUS RES CTR,AUSTIN,TX 78712

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 02期

关键词：

GRADIENT-DRIVEN TURBULENCE; TEXT; SCATTERING; PARTICLE;

D O I：

10.1103/PhysRevLett.67.200

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Long-time precursors of order 5 times the global energy confinement time are observed for disrupting plasmas at the high-density limit on the Texas Experimental Tokamak. These precursors, occurring well in advance of any change in the plasma MHD activity, are reflected in the electron particle and heat transport along with the density fluctuation level. Enhanced microturbulence is proposed as the physical mechanism for the confinement degradation and subsequent disruption.

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页码：200 / 203

页数：4

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