MEASUREMENT OF IRON TRANSPORT IN THE TFTR TOKAMAK BY CHARGE-EXCHANGE RECOMBINATION SPECTROSCOPY

被引：14
|
作者：
STRATTON, BC
SYNAKOWSKI, EJ
EFTHIMION, PC
FONCK, RJ
HILL, KW
HULSE, RA
JOHNSON, DW
PARK, H
TAYLOR, G
TIMBERLAKE, J
机构：
[1] Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ
[2] Department of Nuclear Engineering and Engineering Physics, University of Wisconsin, Madison, WI
来源：
NUCLEAR FUSION | 1991年 / 31卷 / 01期
关键词：
D O I：
10.1088/0029-5515/31/1/015
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：
Transport of iron in TFTR discharges heated by 6.7 MW of co-injected neutral beam power has been studied by spatially resolved charge exchange recombination spectroscopy in the visible region of the spectrum. The time evolutions of the densities of Fe24+ and Fe23+ ions following injection of iron are modelled by the neoclassical flux plus a moderately hollow diffusivity, increasing linearly from 1.3 m2/s on axis to 2.4 m2/s at the plasma edge. For r/a > 0.5, the iron diffusively is significantly smaller than the helium diffusivity measured in identical discharges, while it is larger in the region immediately surrounding the plasma axis.
引用
收藏
页码：171 / 175
页数：5
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