Structure of binary dust Coulomb balls in confining fields of different origin

S. G. Psakhie, K. P. Zolnikov

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We study for the first time a binary mixture of dust particles in plasma which are in the external electrostatic harmonic confining field as well as in the field of gravitational, thermophoretic and electrostatic forces. The interparticle interaction is described by the Yukawa potential. The spatial distribution of the binary mixture of particles depending on their content is investigated. It is shown that particles form an onion-shell structure in which every shell contains only its own species of particles; in so doing, smaller-sized particles make up outer shells with respect to larger-sized particles. With increasing size difference between particles, they are spatially segregated up to the formation of two independent Coulomb balls.

Original languageEnglish
Pages (from-to)144-148
Number of pages5
JournalPhysical Mesomechanics
Issue number3-4
Publication statusPublished - 2008


  • binary Coulomb balls
  • dusty plasma
  • molecular dynamics

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces

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