Measurements of electron density profile characteristics in various kinds of plasma configurations in the TS-3 plasma merging device

被引：1

作者：

Hayashiya, H ^{[1
]}

Katsurai, M

机构：

[1] E Japan Railway, Tokyo, Japan

[2] Univ Tokyo, Tokyo, Japan

来源：

ELECTRICAL ENGINEERING IN JAPAN | 2003年 / 145卷 / 02期

关键词：

spherical torus; compact torus; electron density profile; TS-3; laser interferometer;

D O I：

10.1002/eej.10158

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：

Measurements and a comparative study have been performed on electron density profiles, focusing on the electron density gradient near the magnetic separatrix in various kinds of plasma confinements such as the ST, spheromak, and RFP in the TS-3 device. A CO2 laser interferometer using a glass tube to clear the path for the laser was introduced in order to measure the electron density profile with time resolution. It was shown that ST with a high q value at the plasma edge (q: safety factor) has a larger electron density gradient than low-q plasma confinements such as the spheromak and RFP. In particular, the ST with edge q value greater than about 2 showed a large electron density gradient at the edge. The idea that the j x B force profile of the higher-q ST could sustain the higher thermal pressure supports these results. (C) 2003 Wiley Periodicals, Inc.

引用

页码：35 / 41

页数：7