PLASMA PROCESSES ACCOMPANYING FAST CURRENT DECREASE IN THE TUMAN-3 TOKAMAK

被引：5
|
作者：
SAKHAROV, NV
AKATOVA, TY
ASKINAZI, LG
AFANASIEV, WI
BULANIN, VV
GOLANT, VE
GONCHAROV, SG
KRIKUNOV, SV
KORNEEV, DO
KOROTKOV, AA
LIPIN, BM
MINAEV, VB
PODUSHNIKOVA, KA
RAZDOBARIN, GT
ROZHDESTVENSKY, VV
SEMENOV, VV
TUKACHINSKY, AS
CHERNYSHEV, FV
YAROSHEVICH, SP
机构：
[1] A.F. Ioffe Phys. Tech. Inst., St. Petersburg
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 1993年 / 35卷 / 03期
关键词：
D O I：
10.1088/0741-3335/35/3/010
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：
We report an investigation of the influence of radial current distribution on the Tuman-3 tokamak plasma parameters under the conditions of ohmic heating with a twofold current decrease for a period 4-6 times shorter than the magnetic field diffusion time-scale. A slight change in the parameters was observed in the current ramp-down phase. The characteristic relaxation time of the plasma parameters after the current drop was considerably larger than the energy confinement time and comparable with the field diffusion time-scale. The influence of the current ramp-down on the boundary plasma is also studied. Narrowing of the current density profile is accompanied by a 1.5-2-fold rise of the energy confinement time compared with its steady-state value.
引用
收藏
页码：411 / 418
页数：8
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