Dynamics of pulsed magnetron discharge in high-current electron guns

P. P. Kiziridi, G. E. Ozur, L. A. Zyul’kova, S. A. Popov, S. A. Shevelev, M. A. Alekhin

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Abstract

High-speed video filming is applied to investigate low-pressure (argon 0.053–0.133 Pa) pulsed gas discharge dynamics in a planar magnetron built-in the explosive emission cathode of a high-current electron gun. It has been found that, in the beginning, the discharge starts at the side surface of the cathode and then spreads to its face. The stability of the discharge ignition instant at the cathode face as a function of the working pressure of the gas and the cathode design has been studied. It has been found that the pulsed longitudinal magnetic field results in the discharge switching over in the axial direction onto the electron gun collector. A qualitative explanation of the observed discharge behavior has been given.

Original languageEnglish
Pages (from-to)1643-1650
Number of pages8
JournalTechnical Physics
Volume62
Issue number11
DOIs
Publication statusPublished - 1 Nov 2017

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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  • Cite this

    Kiziridi, P. P., Ozur, G. E., Zyul’kova, L. A., Popov, S. A., Shevelev, S. A., & Alekhin, M. A. (2017). Dynamics of pulsed magnetron discharge in high-current electron guns. Technical Physics, 62(11), 1643-1650. https://doi.org/10.1134/S1063784217110147