Abstract
A model for calculating the surface tension coefficient of a spherical cloud of charged microparticles in a plasma is proposed. The coefficients of the surface tension of Coulomb spheres obtained in a low-pressure glow discharge in neon at a temperature of 77 K for particles with a diameter of 4 μm and a temperature of 295 K for particles with a diameter of 2 μm are calculated. The potential energy of microparticles on the surface of a sphere is determined. In the calculations, a hydrodynamic model of a positive column with charged microparticles is used. The obtained values of the surface tension coefficient are compared with the data obtained by other authors for ball lightnings. A hypothesis is proposed for the formation of Coulomb spheres in the Earth’s atmosphere.
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This study was supported by the Ministry of Science and Higher Education of the Russian Federation (State Assignment no. 075-01129-23-00).
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Polyakov, D.N., Shumova, V.V. & Vasilyak, L.M. Surface Tension of a Cloud of Charged Microparticles in a Gas-Discharge Plasma. Russ. J. Phys. Chem. B 17, 1241–1245 (2023). https://doi.org/10.1134/S1990793123050263
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DOI: https://doi.org/10.1134/S1990793123050263