Turbulent transport studies in the JET edge plasmas in limiter configuration

被引：19
|
作者：
García-Cortés, I [1 ]
Balbín, R
Loarte, A
Bleuel, J
Chankin, A
Davies, SJ
Endler, M
Erents, SK
Hidalgo, C
Matthews, GF
van Milligen, B
Thomsen, H
机构：
[1] CIEMAT, EURATOM Assoc, E-28040 Madrid, Spain
[2] Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England
[3] Max Planck Inst Plasmaphys, EFDA CSU Garching, D-85748 Garching, Germany
[4] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85740 Garching, Germany
[5] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2000年 / 42卷 / 04期
关键词：
D O I：
10.1088/0741-3335/42/4/302
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：
Electrostatic turbulence has been investigated in the plasma boundary region of the JET tokamak. The normalized fluctuation levels are in the range of 10-20% at the plasma radius where the poloidal velocity of the fluctuation reverses sign. In limiter plasmas, the E x B turbulent transport can account for a significant part of the total particle and energy losses. Three regions in the power spectra of the fluctuations with different frequency dependences have been found. The spectral region with power decay close to 1/f has been identified in the frequency range where the turbulent flux, which comes in bursts, is dominant. This result could be an indication of transport close to instability thresholds.
引用
收藏
页码：389 / 400
页数：12
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