Title :
Emission uniformity of the ammonium perrhenate impregnated Ni sponge oxide cathode
Author :
Xiaoxia Wang ; Shikai Qi ; Yanwen Liu ; Jirun Luo ; Qinglan Zhao ; Yun Li ; Qi Zhang
Author_Institution :
Key Lab. of High Power Microwave Sources & Technol., Inst. of Electron., Beijing, China
Abstract :
In order to improve emission performance of the Ni sponge oxide cathodes, an ammonium perrhenate impregnated Ni Sponge Oxide Cathode has been developed by IECAS. In this paper we mainly describe the research on the emission uniformity of this cathode with the thermal electron spectrometry analysis and the work function distribution test. The test results indicates that the emission uniformity of the Ni-Re sponge oxide cathode fabricated by this liquid-solid mixing method is better than that of the conventional Ni-Re sponge oxide cathode fabricated by the solid-solid mixing method.
Keywords :
cathodes; electron spectrometers; nickel; thermal analysis; work function; IECAS; Ni; ammonium perrhenate impregnated Ni sponge oxide cathode; emission uniformity; liquid-solid mixing method; solid-solid mixing method; thermal electron spectrometry analysis; work function distribution test; Cathodes; Current density; Electron microscopy; Nickel; Powders; Spectroscopy; Ammonium perrhenate (NH4ReO4); Emission uniformity; Oxide Cathode; Thermal electron spectrometry analysis;
Conference_Titel :
Vacuum Electronics Conference, IEEE International
Conference_Location :
Monterey, CA
DOI :
10.1109/IVEC.2014.6857528