Investigation of dual mode (O-X) correlation reflectometry for determination of magnetic field strength

被引：12

作者：

Gilmore, M ^{[1
]}

Peebles, WA

Nguyen, XV

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Inst Plasma & Fus Res, Los Angeles, CA 90095 USA

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2000年 / 42卷 / 06期

关键词：

D O I：

10.1088/0741-3335/42/6/304

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：

A new method to measure the internal magnetic field in a plasma, based on crosscorrelation of ordinary (O) mode and extraordinary (X) mode reflectometer signals originating from naturally occurring turbulence, is investigated. This method relies on identifying the O- and X-mode frequency pair (f(o), f(x)) where cross-correlation is maximum. Maximum cross-correlation is found to occur at an X-mode frequency slightly lower than the right-hand cut-off frequency. It is shown that the magnetic field strength can be determined from reflectometer data interpreted via a one-dimensional model, given estimates of the k-spectral width of the electrostatic plasma turbulence, and the electron density gradient scale length.

引用

页码：655 / 668

页数：14

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