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Collection of scientific works Nanosistemi, Nanomateriali, Nanotehnologii Year 2025 Vol. 23, Issue 1
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Vol. 23 / 

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O.K. SHUAIBOV, R.V. HRYTSAK, O.Y. MYNYA, Z.T. HOMOKI, and M.I. VATRALA

Conditions for the Synthesis of Ultrafine Tungsten in a High-Voltage Nanosecond Discharge Between Tungsten Electrodes in Inert Gases

123–133 (2025)

PACS numbers: 51.50.+v, 52.80.Mg, 52.80.Tn, 52.90.+z, 79.60.Jv, 81.16.-c, 82.33.Xj

The electrical and optical characteristics of a high-voltage nanosecond discharge (HVND) between tungsten electrodes at atmospheric pressures of inert gases (Ne, Ar, Kr) are presented. The formation of ultrafine tungsten particles occurred during the introduction of tungsten vapour into the discharge gap as a result of the microexplosions of electrode-surface inhomogeneities in a strong electric field and the formation of ectons. This creates prerequisites for the synthesis of ultrafine tungsten particles in the discharge chamber. The voltage and current oscillograms, the pulse discharge power, and the energy introduced into the plasma during one discharge pulse are studied. The optical characteristics of the discharge are studied from the central part of the discharge gap of 2 mm. The main excited components of the plasma of vapour–gas mixtures He (Ar, Kr)–W at high values of the parameter E/N (where E is the electric-field strength, N is the total concentration of particles in the plasma) are determined.

KEY WORDS: high-voltage nanosecond discharge, tungsten, noble gases, ectons, plasma

DOI:  https://doi.org/10.15407/nnn.23.01.0123

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