Evaluation of gyrotron cathode emission inhomogeneity from current-voltage characteristics

Author

Jianghua Zhang ; Illy, Stefan ; Pagonakis, Ioannis Gr ; Malygin, Anton ; Samartsev, Andrey ; Rzesnicki, Tomasz ; Gantenbein, Gerd ; Dammertz, Gunter ; Piosczyk, Bernhard ; Thumm, Manfred ; Jelonnek, John

Author_Institution

Inst. for Pulsed Power & Microwave Technol. (IHM, Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

In order to evaluate the emission inhomogeneity of a thermionic gyrotron emitter, three mathematical treatments of the current-voltage characteristics (CVC) have been investigated and will be presented in this paper. Results for three different gyrotrons and for different emitter temperatures based on experimental data and mathematical treatment will be considered. The relation between the effective emission inhomogeneity and the work function distribution is numerically calculated.

Keywords

gyrotrons; thermionic cathodes; current-voltage characteristics; gyrotron cathode emission inhomogeneity; thermionic gyrotron emitter; three mathematical treatments; Cathodes; Current-voltage characteristics; Gyrotrons; current density distribution; current-voltage characteristics; emission inhomogeneity; thermionic emitter; work function distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Conference_Location

Beijing

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7223766

Filename

7223766