STUDY OF IMPURITY TRANSPORT IN OHMICALLY AND NEUTRAL BEAM HEATED DIVERTOR DISCHARGES IN JT-60

被引：5

作者：

KOIDE, Y

HIRAYAMA, T

SUGIE, T

SAKASAI, A

KUBO, H

AKAOKA, N

NISHITANI, T

NAGASHIMA, K

SHIRAI, H

TAKEUCHI, H

机构：

[1] JAERI, Japan

来源：

NUCLEAR FUSION | 1988年 / 28卷 / 10期

关键词：

Computer Simulation - Titanium and Alloys - Tokamak Devices;

D O I：

10.1088/0029-5515/28/10/011

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 impurity transport characteristics of ohmically and neutral beam heated diverted plasmas in JT-60 have been studied. In sawtoothfree, ohmically heated plasmas with Ip=1.5 MA, n¯e =(2-3)×1019m-3, q(a)=3.2, no radiation buildup is observed. The temporal evolution of injected titanium has been measured by VUV and X-ray crystal spectrometers and PIN diodes. The spectral lines of Ti XX (259.3 Angstrom) and Ti XXI (2.609 Angstrom) are compared with one-dimensional diffusive/convective impurity transport calculations. The experimental observations are well represented by choosing DA=(1-2)m2 &middots-1 and a small inward velocity.

引用

页码：1835 / 1844

页数：10

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