Application of one-dimensional Wentzel-Kramers-Brillouin approximation in microwave reflectometry of plasma density profiles

被引：5

作者：

Bruskin, LG ^{[1
]}

Mase, A ^{[1
]}

Tamano, T ^{[1
]}

Yatsu, K ^{[1
]}

机构：

[1] Univ Tsukuba, Plasma Res Ctr, Tsukuba, Ibaraki 305, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1998年 / 69卷 / 05期

关键词：

D O I：

10.1063/1.1148921

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The accuracy of the one-dimensional (1D) Wentzel-Kramers-Brillouin (WKB) reconstruction algorithm currently used in microwave reflectometry of fusion plasmas is investigated. Two experimental conditions beyond the applicability of the 1D WKB approximation are discussed: a plasma with steep density gradients and the case of strong divergence of the microwave beam. It is demonstrated, that the 1D procedure of profile reconstruction provides a fairly accurate estimate for both cases, despite the influence of abrupt density changes and multidimensional effects. (C) 1998 American Institute of Physics.

引用

页码：2184 / 2185

页数：2

共 6 条

[1] 2-DIMENSIONAL MICROWAVE-SCATTERING BY FLUCTUATIONS OF PLASMA-DENSITY AND MAGNETIC-FIELD [J].

BRUSKIN, LG ;

MASE, A ;

TAMANO, T .

PLASMA PHYSICS AND CONTROLLED FUSION, 1995, 37 (03) :255-269

[2] X-MODE BROAD-BAND REFLECTOMETRIC DENSITY PROFILE MEASUREMENTS ON DIII-D [J].

DOYLE, EJ ;

LEHECKA, T ;

LUHMANN, NC ;

PEEBLES, WA .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1990, 61 (10) :2896-2898

[3]

Ginzburg V. L., 1970, PROPAGATION ELECTROM

[4]

Korn G. A, 1968, MATH HDB SCI ENG

[5] SWEPT FREQUENCY REFLECTOMETER FOR CORRELATION STUDIES IN THE TJ-I TOKAMAK [J].

SANCHEZ, J ;

BRANAS, B ;

DELALUNA, E ;

ESTRADA, T .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1993, 64 (02) :487-491

[6] MEASUREMENT OF ELECTRON-DENSITY PROFILE BY MICROWAVE REFLECTOMETRY ON TOKAMAKS [J].

SIMONET, F .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1985, 56 (05) :664-669

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