Title :
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
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;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.863895
