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High-voltage thermionic polaron emission in the presence of adsorbed nonmetal nanofilm on a cathode

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Abstract

The equation of thermionic emission has been derived, which takes into account the presence of thin films of adsorbed gas-environment molecules on a cathode under conditions of high-voltage gas discharge. It is shown that the consideration of electron polaron tunneling mechanism leads to a significant (by more than an order of magnitude) decrease in the emission-current density. A comparison with the classical Richardson–Schottky equation is performed. The role of the polaron effect is shown to strongly increase with an increase in the applied electric field strength and a decrease in temperature, which is due to an increase in the electron work function because of polaron nature.

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Authors and Affiliations

  1. Shevchenko Trans-Dniester State University, 3300, Tiraspol, Moldova

    Yu. A. Barengolts & S. I. Beril

Authors
  1. Yu. A. Barengolts
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  2. S. I. Beril
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Correspondence to Yu. A. Barengolts.

Additional information

Original Russian Text © Yu.A. Barengolts, S.I. Beril, 2016, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 42, No. 13, pp. 58–63.

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Barengolts, Y.A., Beril, S.I. High-voltage thermionic polaron emission in the presence of adsorbed nonmetal nanofilm on a cathode. Tech. Phys. Lett. 42, 689–691 (2016). https://doi.org/10.1134/S1063785016070026

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  • DOI: https://doi.org/10.1134/S1063785016070026

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