Abstract
We analyze the physical reason for own rotation of dust particles. We propose from analysis of literature data and our previous studies that own rotation of dust particles is due to azimuth-symmetric flow of ions to the particle surface, which is associated with a nonuniform distribution of the surface charge. This assumption is in conformity with the results of experiments in which the plasma flow is changed by introducing particles in the horizontal plane (horizontal cluster) and particles aligned along the discharge current (vertical cluster) and with the observation of the rotation threshold for the discharge current and the magnetic field. The experiments are performed with spherical particles using the coordinate tracing method. Our results make it possible to construct a model of spinning of charged dust tops for describing magnetic properties of a complex plasma.
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Original Russian Text © V.Yu. Karasev, M.A. Ermolenko, E.S. Dzlieva, S.I. Pavlov, L.A. Novikov, I.Ch. Mashek, 2016, published in Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 86, No. 4, pp. 139–144.
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Karasev, V.Y., Ermolenko, M.A., Dzlieva, E.S. et al. On the mechanism of own rotation of dust particles. Tech. Phys. 61, 618–623 (2016). https://doi.org/10.1134/S1063784216040101
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DOI: https://doi.org/10.1134/S1063784216040101