Abstract
Molecular dynamics simulations are performed to analyze the dependence of the behavior of complex (dusty) plasmas in narrow three-dimensional channels on the confining potential. Dynamics of micrometer-sized particles is modeled by using Langevin thermostat and Yukawa (screened Coulomb) pair interaction potential. A detailed analysis shows that confinement strongly affects plasma crystallization characteristics and local ordering of dust grains. In particular, the formation of a new, quasi-crystalline phase induced by hard-wall confinement is revealed. Transitions between different lattice symmetries induced by changes in channel width are examined. Strong dependence of the transverse dust density profile on the shielding parameter (ratio between mean interparticle distance and screening length) can be used to manipulate the dust-grain flux in such a system.
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Original Russian Text © B.A. Klumov, G.E. Morfill, 2008, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2008, Vol. 134, No. 5, pp. 1059–1068.
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Klumov, B.A., Morfill, G.E. Characteristics of crystallization of complex plasmas in narrow channels. J. Exp. Theor. Phys. 107, 908–915 (2008). https://doi.org/10.1134/S106377610811023X
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DOI: https://doi.org/10.1134/S106377610811023X