Characterization of modes in coaxial vircator

Author

Shao, Hao ; Liu, Guozhi ; Yang, Zhanfeng ; Chen, Changhua ; Song, Zhimin ; Huang, Wenhua

Author_Institution

Northwest Inst. of Nucl. Technol., Xi´´an, China

Volume

34

Issue

1

fYear

2006

Firstpage

7

Lastpage

13

Abstract

Modes´ character of high-power microwave (HPM) pulses generated in coaxial vircator is discussed. The electromagnetic (EM) field gains due to beam-wave interaction for TM₀₁ and TE₁₁ modes are derived according to the E-field distribution pattern inside the anode cavity. Two-and-a-half dimensional (2.5-D) and three-dimensional (3-D) computer simulations are carried out to determine the main mode under different numerical simulation coordinate systems. Finally, the experimental verification is obtained by two different diagnostic methods. The results indicate that for most cases, the TE₁₁ mode dominates the output power in the coaxial vircator studied.

Keywords

electromagnetic fields; microwave generation; vircators; E-field distribution pattern; anode cavity; beam-wave interaction; coaxial vircator; computer simulations; electromagnetic field; high-power microwave pulses; Anodes; Character generation; Coaxial components; Computer simulation; Electromagnetic fields; High power microwave generation; Microwave generation; Numerical simulation; Pulse generation; Tellurium; Beam–wave interaction; coaxial vircator; high-power microwaves (HPM); virtual cathode oscillator;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.863895

Filename

1593841