Distributions of Polydisperse Dust Grains in Noble Gas Mixtures
Dzlieva E.S. Maiorov S.A. Novikov L.A. Pavlov S.I. Balabas M.V. Krylov I.R. Karasev V.Y.
October 2022Pleiades Publishing
Plasma Physics Reports
2022#48Issue 101066 - 1070 pp.
Abstract: The size of levitating dust grains depends on the discharge conditions. By varying the plasma parameters, one can control the characteristics of dust structures. The method is presented for controlling the parameters of the dust trap in a standing stratum by creating the plasma-forming gas as mixture of noble gases with different ionization potentials (xenon and helium). The experimental technique consists in using polydisperse grains, from which in the trap, the grains are selected with sizes corresponding to the conditions in the plasma. Based on accounting for approximately 1000 grains, histograms of grain distributions over average size were obtained. It is shown that, under the chosen experimental conditions, when adding of up to 10% xenon to helium, the grain sizes change maximally from 8.9 to 3.3 µm. The balance of forces was numerically estimated.
dusty plasma , glow discharge , mixture of noble gases , polydisperse grains
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Saint Petersburg University, Saint Petersburg, 199034, Russian Federation
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, 119991, Russian Federation
Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 127412, Russian Federation
Institute of Theoretical and Experimental Physics, Al-Farabi State University of Kazakhstan, Almaty, 480012, Kazakhstan
Saint Petersburg University
Prokhorov General Physics Institute of the Russian Academy of Sciences
Joint Institute for High Temperatures
Institute of Theoretical and Experimental Physics
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