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An X-Ray Study of the Structure of the Alkaline Earth Oxide Cathode

  • Paul Lublin (a1)

Abstract

Art X-ray diffraction study has been conducted on the emissive coating (Ba, Sr, CaO) of experimental diodes from which thermionic emission data were taken before X-ray analysis. The tubes were then opened and the oxide protected by special techniques in order to prevent the formation of the hydroxide. In addition to X-ray diffraction, other techniques were used to give a complete description of the structures present.

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1. Tufts, G. F., Lublin, P., and Wolk, B., “A Technique for the Analysis of Activated Oxide-Coated Cathodes Using X-ray Diffraction and Light Microscopy, “ presented at the Electrochemical Society Meeting, May 1959.
2. Eisenstein, A., “A Study of Oxide Cathodes by X-ray Diffraction Methods,” J. Appl. Phys. 17:436, 654, 1946.
3. Yamaka, E., “A Study of the Oxide Coated Cathode by X-ray Diffraction,” J. Appl. Phys. 23: 937, 1952.
4. Ostapchenko, E. P., “X-ray Investigation of the System of Double and Triple Carbonates and Oxides of Alkaline Earth Metal,” Izvest. Akad. Nauk. S.S.S.R. Ser. Fis. 20: 1105, 1956.
5. Terada, J., “An X-ray Study of Barium-Strontium-Calcium Triple Oxide,” J. Phys. Soc. Japan 10: 555, 1955.
6. Rooksby, H. P., “Changes in the Structure of Oxide Cathodes at High Temperatures,” Brit. J. Appl. Phys. 6: 272, 1955.

An X-Ray Study of the Structure of the Alkaline Earth Oxide Cathode

  • Paul Lublin (a1)

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