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Field-Emission Cathodes Based on Microchannel Plates

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Abstract

The existing methods of fabricating low-field cathodes do not permit the development of device structures that comply with the requirements of developers of systems. In this work, large-area field-emission cathodes with homogeneous emission properties of the working surface and low working voltages (<1 kV) are considered. A Spindt cathode with a number of silicon microtips up to 6000 and a packing density of ~1 × 105 cm–2 is investigated. Titanium nitride and carbon films are deposited onto microtips using the electric-arc method. It is shown that the cathode has low emission homogeneity due to the problem of reproducing microtips of the same shape and size. A cathode based on a microchannel plate with channels 6 μm in diameter, inside which graphite-like nanostructures are formed by the electric-arc method, is fabricated. It is found that an increase in the electron flux in the channels of a microchannel plate can result in a considerable decrease in the operating voltage (<1 kV) and attain high emission homogeneity at the highest admissible output current.

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Authors and Affiliations

  1. Institute of Informatics and Problems of Regional Management of Caucasus, Russian Academy of Sciences, Nalchik, Russia

    Z. M. Khamdokhov & Z. Ch. Margushev

  2. Berbekov Kabardino-Balkarian State University, Nalchik, Russia

    E. Z. Khamdokhov & R. Sh. Teshev

  3. Scientific-and-Research Center, AO NPP “Radii”, Moscow, Russia

    M. D. Bavizhev

Authors
  1. Z. M. Khamdokhov
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  2. Z. Ch. Margushev
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  3. E. Z. Khamdokhov
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  4. R. Sh. Teshev
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  5. M. D. Bavizhev
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Correspondence to Z. M. Khamdokhov.

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Translated by N. Korovin

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Khamdokhov, Z.M., Margushev, Z.C., Khamdokhov, E.Z. et al. Field-Emission Cathodes Based on Microchannel Plates. Semiconductors 53, 2037–2039 (2019). https://doi.org/10.1134/S1063782619150090

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  • DOI: https://doi.org/10.1134/S1063782619150090

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