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

fYear

2014

fDate

22-24 April 2014

Firstpage

139

Lastpage

140

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, IEEE International

Conference_Location

Monterey, CA

Type

conf

DOI

10.1109/IVEC.2014.6857528

Filename

6857528