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Increasing the reliability and service life of the cathode unit of an electron accelerator with extraction of a large-cross-section beam to the atmosphere

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Abstract

The design of an electron accelerator cathode unit with short filament elements in the form of a coil without a tightening mechanism is described. The advantage of the developed design over those of cathodes with long filaments with tightening mechanisms is shown. The nonuniformity of the beam-current density distribution behind the foil is <3%. The filament power required for cathodes in the form of coils is 20% lower than that for long-filament cathodes at the same beam-current density. Mechanical stresses leading to a breakdown of the cathode filaments are absent. The service life is determined mainly by the emission-caused wear of cathodes.

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Authors and Affiliations

  1. Research Institute of Complex Testing of Optoelectronic Devices, Sosnovyi Bor, Leningrad oblast, 188540, Russia

    T. E. Anisimova & A. N. Malinin

Authors
  1. T. E. Anisimova
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  2. A. N. Malinin
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Original Russian Text © T.E. Anisimova, A.N. Malinin, 2008, published in Pribory i Tekhnika Eksperimenta, 2008, No. 6, pp. 99–102.

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Anisimova, T.E., Malinin, A.N. Increasing the reliability and service life of the cathode unit of an electron accelerator with extraction of a large-cross-section beam to the atmosphere. Instrum Exp Tech 51, 871–874 (2008). https://doi.org/10.1134/S0020441208060171

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  • DOI: https://doi.org/10.1134/S0020441208060171

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