Title :
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
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;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223766
