Coaxial cavity vircator with enhanced efficiency

被引：17

作者：

Liu, G. Z. ^{[1
]}

Shao, H. ^{[1
]}

Yang, Z. F. ^{[1
]}

Song, Z. M. ^{[1
]}

Chen, C. H. ^{[1
]}

Sun, J. ^{[1
]}

Zhang, Y. P. ^{[1
]}

机构：

[1] NW Inst Nucl Technol, Xian, Peoples R China

来源：

JOURNAL OF PLASMA PHYSICS | 2008年 / 74卷

关键词：

D O I：

10.1017/S0022377807006976

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 vircator with a coaxial cavity has the potential to increase the beam-microwave conversion efficiency. According to the E-field distribution pattern of the modes in the anode cavity of a coaxial vircator, the resonant frequency band of the injected electron beam and the lowest two operating modes are derived. The main frequency of the virtual cathode is also deduced. The optimal operating frequency and high-efficiency designing method of a coaxial cavity vircator is discussed. An experimental setup is designed and built to test the high-power microwave (HPM) generation mechanism described by theoretical analysis as well as increase the power efficiency. HPM frequency obtained in the experiment is in good agreement with the analysis. The power and energy efficiencies obtained in the experiment are, respectively, 8.7% and 6.8% with 50 ns pulse width. Frequency and phase stable HPM. radiation is observed as well as pulse shortening is evidently depressed.

引用

页码：233 / 244

页数：12

共 11 条

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