Poloidal inhomogeneity of turbulence in the FT-2 tokamak by radial correlation Doppler reflectometry and gyrokinetic modelling

被引：16

作者：

Altukhov, A. B. ^{[1
]}

Gurchenko, A. D. ^{[1
]}

Gusakov, E. Z. ^{[1
]}

Esipov, L. A. ^{[1
]}

Irzak, M. A. ^{[1
]}

Kantor, M. Yu ^{[1
]}

Kouprienko, D. V. ^{[1
]}

Lashkul, S. I. ^{[1
]}

Leerink, S. ^{[2
]}

Niskala, P. ^{[2
]}

Stepanov, A. Yu ^{[1
]}

Teplova, N. V. ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg, Russia

[2] Aalto Univ, Espoo, Finland

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2016年 / 58卷 / 10期

基金：

芬兰科学院;

关键词：

turbulence; radial correlation reflectometry; correlation length; plasma; FLUCTUATIONS; DIAGNOSTICS; DENSITY; UPGRADE; LENGTH; CORE;

D O I：

10.1088/0741-3335/58/10/105004

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 poloidal dependence of the drift-wave turbulence characteristics is investigated at the FT-2 tokamak by radial correlation Doppler reflectometry (RCDR) technique and using the full distribution function global gyrokinetic modelling by ELMFIRE code. The poloidal variation of the turbulence radial correlation length from 0.2-0.55 cm is demonstrated both by measurement and computation. The turbulence correlation length rapidly decreases from the top of the poloidal cross-section to the high field side and then steadily grows in the poloidal direction. A well-pronounced excess of the turbulence radial correlation length in deuterium over its value in hydrogen discharges is demonstrated.

引用

页数：8

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