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that the emitting surface is covered with a thin film of electrolytically produced thorium (or possibly a complex thorium-oxygen film). The film thickness should be dependent upon the rate of electrolysis and upon the rate of evaporation, The conductivity will likewise be affected by the presence of the surface metallic film.
The rate of electrolytic decomposition undoubtedly is an important factor in the life of thoria cathodes, in those cases where high average current densities are passed.
๐ SIMILAR VOLUMES
The 25th Anniversary Annual Meeting of the Carbon Society of Japan was held in Tokyo, on November 19-21,1974, at the headquarters of the Chemical Society of Japan. The President of the CSJ. Dr. H. Honda. opened the meeting. Due to a railway strike, the number of attendees oscillated between 50 and I