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Proceedings Paper

Coaxial diode and vircator
Author(s): Guozhi Liu; Shi Qiu; Hongjun Wang; Wenhua Huang; Feng Wang
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Paper Abstract

The experimental and theoretical results of coaxial diode and the theoretical results of coaxial vircator are presented in this paper. The cathode is a cold, field- emitting graphite ring and needle-shaped copper applied to a grounded cylinder. The anode is a semi-transparent cylinder located inside of, and concentric to the cathode cylinder. The anode cylinder is pulsed positive. The coaxial vircator generates microwave by injecting a radial electron beam into cylinder such that the space-charge limited current is exceeded. A virtual cathode forms and oscillates in radial position and amplitude, generating microwaves which are extracted by an attached waveguide with a circular cross- section. Analytic and PIC simulations were used to study coaxial diode and vircator, with aid of the two dimensional PIC code, KARAT. The comparisons between the theoretical and the experimental results for a coaxial diode are presented.

Paper Details

Date Published: 3 October 1997
PDF: 8 pages
Proc. SPIE 3158, Intense Microwave Pulses V, (3 October 1997); doi: 10.1117/12.284015
Show Author Affiliations
Guozhi Liu, Northwest Institute of Nuclear Technology (China)
Shi Qiu, Northwest Institute of Nuclear Technology (China)
Hongjun Wang, Northwest Institute of Nuclear Technology (China)
Wenhua Huang, Northwest Institute of Nuclear Technology (China)
Feng Wang, Northwest Institute of Nuclear Technology (China)

Published in SPIE Proceedings Vol. 3158:
Intense Microwave Pulses V
Howard E. Brandt, Editor(s)

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