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Analysis of the Behavior of Individual Emission Sites on the Surface of a Multi-Tip Field Cathode

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Abstract

A method of analysis of the surface of multi-tip field cathodes using data obtained with the aid of a computer-controlled field emission projector and a system of fast high-voltage scanning is described. An investigation of a polymer/carbon nanotube composite field electron emitter by this method was used to determine the distribution of individual emission sites over the surface of a multi-tip field cathode and to estimate variation of the work function of separate emission sites depending on the applied voltage. The contributions of separate groups of emission sites to a change of the shape of current–voltage characteristic of a multi-tip cathode have been numerically estimated.

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Authors and Affiliations

  1. Ioffe Physical Technical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    A. G. Kolosko, E. O. Popov & S. V. Filippov

Authors
  1. A. G. Kolosko
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  2. E. O. Popov
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  3. S. V. Filippov
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Correspondence to A. G. Kolosko.

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Translated by P. Pozdeev

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Kolosko, A.G., Popov, E.O. & Filippov, S.V. Analysis of the Behavior of Individual Emission Sites on the Surface of a Multi-Tip Field Cathode. Tech. Phys. Lett. 45, 304–307 (2019). https://doi.org/10.1134/S1063785019030283

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  • DOI: https://doi.org/10.1134/S1063785019030283

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