Sawtooth Activities During Impurity Injection by Laser Blow-off in HL-2A

被引：0
|
作者：
邓玮 [1 ]
刘仪 [1 ]
崔正英 [1 ]
董云波 [1 ]
黄渊 [1 ]
张鹏 [1 ]
孙平 [1 ]
傅炳忠 [1 ]
机构：
[1] Southwestern Institute of Physics,Chengdu 610041,China
来源：
Plasma Science and Technology | 2007年 / 04期
基金：
中国国家自然科学基金;
关键词：
impurity injection; tomography; sawtooth activity;
D O I：
暂无
中图分类号：
O532.26 [];
学科分类号：
摘要：
In order to study impurity transport and their progression in the plasma,smallamount of high-Z impurities were injected into HL-2A ohmic heated plasmas by laser blow-off andtraced with good spatial temporal resolution by a soft X-ray camera.An analysis of the evolutionof the impurities’ radiation distribution in the plasma revealed that impurity transport in thecentral region was profoundly different from that outside of it.It was found that the sawteethtended to be inverted on the central soft X-ray chord signals after the impurity injection and thesoft X-ray profiles exhibited discontinuities during the movement of the impurities in the plasmacentral region.Detailed 2D visualization of the evolution of impurities’ radiation using computertomography has provided further understanding of the properties of impurity transport in theHL-2A plasma.
引用
收藏
页码：411 / 416
页数：6
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