Effect of plasma radial electric field on motional Stark effect measurements and equilibrium reconstruction

被引：51

作者：

Rice, BW ^{[1
]}

Burrell, KH ^{[1
]}

Lao, LL ^{[1
]}

机构：

[1] GEN ATOM CO, SAN DIEGO, CA 92186 USA

来源：

NUCLEAR FUSION | 1997年 / 37卷 / 04期

关键词：

D O I：

10.1088/0029-5515/37/4/I09

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 motional Stark effect (MSE) has become the leading diagnostic technique for measurement of the internal poloidal field profile in neutral beam heated tokamak plasmas. The technique relies upon the measurement of the polarization angle of Stark broadened neutral beam D-alpha emission due to the strong E = v(b) X B motional electric field. In many recently discovered enhanced confinement regimes in tokamaks, a strong radial electric field E-r is also present in the plasma. It is shown that in these cases, the effect of E-r on the interpretation of MSE measurements is significant and cannot be neglected. The importance of this effect is illustrated with the analysis of the q profile in a high performance discharge from the DIII-D tokamak.

引用

页码：517 / 522

页数：6

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