Emission Profile Studies of Thermionic Cathodes and Field Emitters

  • Tawa, Yasuhiro (CRT Division, Saitama Plant, Tokyo Cathode Laboratory Co., Ltd.) ;
  • Kai, Junjiro (Osaka R&D Laboratory, Tokyo Cathode Laboratory Co., Ltd.) ;
  • Tama, Masayoshi (Osaka R&D Laboratory, Tokyo Cathode Laboratory Co., Ltd.) ;
  • Ijima, Kenji (Osaka R&D Laboratory, Tokyo Cathode Laboratory Co., Ltd.) ;
  • Saito, Tsunenari (CRT Division, Saitama Plant, Tokyo Cathode Laboratory Co., Ltd.)
  • Published : 2002.08.21

Abstract

Emissions of thermionic cathodes and field emitters were studied using a cathode emission profiler which works based on the anode scanning method. Findings about impregnated cathodes in thermal activation and gas poisoning processes are shown. Effects of surface treatments for field emitters are studied from the viewpoint of emission profiles and characteristics of the emitters.

Keywords