Dynamics of the electron thermal diffusivity at improved energy confinement during lower hybrid plasma heating in the FT-2 tokamak

被引：5
|
作者：
Kouprienko, D. V. [1 ]
Altukhov, A. B. [1 ]
Gurchenko, A. D. [1 ]
Gusakov, E. Z. [1 ]
Kantor, M. Yu. [1 ]
Lashkul, S. I. [1 ]
Esipov, L. A. [1 ]
机构：
[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
PLASMA PHYSICS REPORTS | 2010年 / 36卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
UHR BACKSCATTERING DIAGNOSTICS; TRANSPORT BARRIERS; SCATTERING DIAGNOSTICS; POLOIDAL ROTATION; TURBULENCE; MODE; TRANSITION; FIELD; DISCHARGES; COMPONENT;
D O I：
10.1134/S1063780X10050016
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：
The dynamics of electron heat transport at improved energy confinement during lower hybrid plasma heating in the FT-2 tokamak was studied experimentally. Evolution of the profiles of the electron temperature and density was thoroughly investigated under conditions of fast variation in the plasma parameters. The energy balance in the electron channel is calculated with the help of the ASTRA code by using the measured plasma parameters. Correlation is revealed between the dynamics of electron heat transport and the behavior of small-scale drift turbulence measured using the enhanced scattering correlation diagnostics. The suppression of heat transfer and turbulence agrees well with the increase in the shear of poloidal plasma rotation calculated from experimental data in the neoclassical approximation.
引用
收藏
页码：371 / 380
页数：10
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