Life of Copper-Beryllium (1.5%) Secondary Emission Surfaces

Life of copper-beryllium secondary emission surfaces treated under various oxygen pressures and temperatures was investigated as a function of primary current density. Changes of secon-dary emission characteristics such as yield curve, saturation curve and primary current on yield were observed at s...

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Bibliographic Details
Published inOyo Buturi Vol. 23; no. 3; pp. 108 - 111
Main Authors YOSHIDA, Shigetomo, IGARASHI, Yoshikazu, ARATA, Hikaru
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Applied Physics 10.03.1954
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Summary:Life of copper-beryllium secondary emission surfaces treated under various oxygen pressures and temperatures was investigated as a function of primary current density. Changes of secon-dary emission characteristics such as yield curve, saturation curve and primary current on yield were observed at several intermediate states of life. With further observations by electron microscope and electron diffraction camera, it was thought that the dissociation of beryllium oxide film on the alloy surface by the primary electron bombardment might be the main factor to determine the life.
ISSN:0369-8009
2188-2290
DOI:10.11470/oubutsu1932.23.108