COMPARISON OF THE DENSITY FLUCTUATION SPECTRUM AND AMPLITUDE IN TEXT WITH EXPECTATIONS FOR ELECTRON-DRIFT WAVES

被引:37
作者
YU, CX
BROWER, DL
ZHAO, SJ
PEEBLES, WA
LUHMANN, NC
BRAVENEC, RV
CHEN, JY
LIN, H
RITZ, CP
SCHOCH, PM
YANG, XZ
机构
[1] UNIV CALIF LOS ANGELES,INST PLASMA & FUS RES,LOS ANGELES,CA 90024
[2] UNIV TEXAS,FUS RES CTR,AUSTIN,TX 78712
[3] UNIV SCI & TECHNOL CHINA,DEPT MODERN PHYS,HEFEI,PEOPLES R CHINA
[4] RENSSELAER POLYTECH INST,TROY,NY 12181
[5] CHINESE ACAD SCI,INST PHYS,BEIJING,PEOPLES R CHINA
来源
PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1992年 / 4卷 / 02期
关键词
D O I
10.1063/1.860287
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
Modifications to the spectrum and magnitude of turbulent density fluctuations in the Texas Experimental Tokamak (TEXT) [Plasma Phys. Controlled Fusion 27, 1335 (1985)], measured by far-infrared scattering, are related to changes in plasma profiles (e.g., density and potential) induced by naturally occurring magnetic islands (i.e., m = 2) of varying amplitude. The statistical dispersion relation of the microturbulence that propagates in the electron diamagnetic drift direction is observed to be consistent with expectations for electron drift-wave turbulence when a spectral shift due to E X B plasma rotation is included. Observed spectral widths are several times larger than the linear mode frequency. The fluctuation amplitude is found to scale inversely with the electron density scale length.
引用
收藏
页码:381 / 385
页数:5
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