THEORETICAL-STUDY OF A PLASMA-COLUMN SUSTAINED BY AN ELECTROMAGNETIC SURFACE-WAVE IN THE DIPOLAR MODE

被引：22

作者：

BENOVA, E ^{[1
]}

GHANASHEV, I ^{[1
]}

ZHELYAZKOV, I ^{[1
]}

机构：

[1] UNIV SOFIA,FAC PHYS,BU-1126 SOFIA,BULGARIA

来源：

JOURNAL OF PLASMA PHYSICS | 1991年 / 45卷

关键词：

D O I：

10.1017/S0022377800015592

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：

This paper presents a theoretical model of a plasma column sustained by an electromagnetic surface wave in the dipolar (m = 1) mode for two different gas-discharge regimes: free-fall/diffusion and recombination respectively. The dispersion characteristics of the wave and the axial profiles of the plasma density, wave power, wavenumber and wave-field components for a given regime are specified by one numerical parameter sigma = omega-R/c, where omega is the angular wave frequency, R the plasma radius and c the speed of light, irrespective of the gas nature and pressure. It is established that there exists a 'critical' value of this parameter, sigma-cr = 0.3726, below which a plasma is not likely to be sustained. A comparison between the axial structures of plasma columns sustained by electromagnetic waves in the dipolar and azimuthally symmetric modes is made. The model is in agreement with the available experimental results.

引用

页码：137 / 152

页数：16

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