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This paper describes recent progress on the investigation of scandate cathodes at BVERI. The key factors related to the cathode emission performance will be discussed. The application results of scandate cathodes in linear inductance accelerator (LIA), sheat beam TWTs (SBTWTs), electric thrusters and coaxial magnetrons will be presented.
This paper introduces the investigation of high performance Nickel-Oxide cathode for high powerw with long pulse. The authors also discuss the key factors affecting the performance of cathode, including the cathode surface, porosity of Nickel matrix, and distribution of temperature, etc. the authors employ the special mould to change the density and roughness of cathode surface. Finally, the magnetron...
This paper describes the experiments for the evaporation and film degradation of osmium-coated cathode. Evaporating rate and under-heated characters were tested, and SEM & EDS were used. Barium evaporation is the main factor of cathode life degradation under 1080 C. The model of failure caused by evaporation was established.
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