Charging of a rodlike grain in plasma flow

  • R.I. Golyatina
  • S.A. Maiorov


In present work on the basis of numerical modeling by the dynamics of many particles, a self-consistentproblem of the formation of a charge accumulated by a dusty particle of a rodlike shape in a twotemperatureplasma flow is considered. An analytical model useful for understanding the phenomenon ofion focusing and its effect on the formation of the surface charge of a needle was considered. Pairwise radialcorrelation functions evaluated in the approximation of binary interaction for moving particles with astationary Coulomb center. Using conservation law for the momentum ion velocity component has beendetermined. It was noticed that electron shielding does not influence on the ion focusing density peak value.In that reason ion focusing parameters in the concrete doesn’t depend on the electron screening Debyeradius. A system with Coulomb particles containing moving point particles, ions and electrons, and fixedspheres have been chosen. The cases of dielectric and metallic dust grains having different orientationswith respect to the flow direction are considered.
How to Cite
GOLYATINA, R.I.; MAIOROV, S.A.. Charging of a rodlike grain in plasma flow. Physical Sciences and Technology, [S.l.], v. 4, n. 2, p. 4-14, july 2018. ISSN 2409-6121. Available at: <>. Date accessed: 16 jan. 2019. doi:
Plasma Physics and Related Technology