Abstract
The influence of atoms, molecules, or layers adsorbed on the cathode surface on the initiation of high-voltage gas discharge is considered. It is shown that the presence of island films of an adsorbate leads to an increase in the field-induced electron emission current that initiates breakdown of the gas-filled interelectrode gap. The formation of a continuous adsorbed film on the cathode accounts for the subsequent weak dependence of the emission characteristics in high-voltage (in particular, picosecond pulsed) discharge on the gas phase composition.
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Original Russian Text © Yu.A. Barengolts, 2012, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2012, Vol. 38, No. 5, pp. 35–40.
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Barengolts, Y.A. Potential barrier decrease at cathode boundary under high-voltage gas-discharge conditions. Tech. Phys. Lett. 38, 218–220 (2012). https://doi.org/10.1134/S1063785012030042
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DOI: https://doi.org/10.1134/S1063785012030042