LINEAR-ANALYSIS OF A FINITE LENGTH PLASMA-FILLED BACKWARD-WAVE OSCILLATOR

被引：26

作者：

ALI, MM

OGURA, K

MINAMI, K

WATANABE, T

DESTLER, WW

GRANATSTEIN, VL

机构：

[1] NATL INST FUS SCI,NAGOYA 46401,JAPAN

[2] UNIV MARYLAND,PLASMA RES LAB,COLLEGE PK,MD 20742

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1992年 / 4卷 / 04期

关键词：

D O I：

10.1063/1.860225

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：

Absolute instability in a plasma-filled backward wave oscillator with sinusoidally corrugated slow wave structure driven by an intense relativistic electron beam has been analyzed numerically. The maximum spatial growth rate of the plasma-filled waveguide is found to be larger than that of an optimally designed vacuum structure. The excitation of a finite length structure is investigated. Although the spatial growth rates obtained in the linear theory increase with plasma density in the finite length plasma-filled structure for the fundamental TM01 mode of oscillation, negative global spatial growth rates prevent the coherent oscillation for intermediate ranges of plasma density, beam current, and even for structure length.

引用

页码：1023 / 1032

页数：10

共 24 条

[1]

Alexandrov A. F., 1984, PRINCIPLE PLASMA ELE, P34

[2] ABSOLUTE INSTABILITY FOR ENHANCED RADIATION FROM A HIGH-POWER PLASMA-FILLED BACKWARD-WAVE OSCILLATOR [J].