Deuterium atomic density estimation in recombining plasmas using self-absorption spectroscopy

被引：1

作者：

Kajita, Shin ^{[1
]}

Nishiwaki, Toshihiro ^{[2
]}

Ohno, Noriyasu ^{[2
]}

Sawada, Keiji ^{[3
]}

Takagi, Makoto ^{[2
]}

机构：

[1] Nagoya Univ, Ecotopia Sci Inst, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Shinshu Univ, Fac Engn, Nagano 3808553, Japan

来源：

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING | 2013年 / 8卷 / 01期

关键词：

atomic density; detached plasma; spectroscopy; vacuum ultraviolet; MOLECULAR-HYDROGEN; LINE-INTENSITIES; IONIZING PLASMA; GRAPHITE;

D O I：

10.1002/tee.21784

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Deuterium atomic density in the divertor region of fusion reactors is an important parameter. In this study, atomic density is estimated in the divertor simulator NAGDIS-T by use of an absorption effect of Lyman-beta, of which the wavelength is in the vacuum ultraviolet (VUV). The calibration of the spectrometer in the VUV wavelength was performed by using a branching ratio method. The intensity ratio of Lyman-beta to Balmer-a significantly decreased in detached plasmas because of radiation trapping. The atomic density was estimated by use of self-absorption effect. (c) 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

引用

页码：1 / 6

页数：6

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