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Polarization of a Dust Particle and Surrounded Plasma in an External Electric Field
Author(s) -
Sukhinin G. I.,
Fedoseev A. V.,
Salnikov M. V.
Publication year - 2016
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201500128
Subject(s) - electric field , physics , ion , dipole , polarization (electrochemistry) , dusty plasma , plasma , electron , anisotropy , particle (ecology) , mean free path , monte carlo method , atomic physics , computational physics , optics , quantum mechanics , chemistry , oceanography , statistics , mathematics , geology
Numerical investigations of different properties of the system of a dust particle and ion cloud are presented. The model is based on the solution of Newton equations for ion trajectories with Monte‐Carlo simulations for the ions initial position, velocity distribution, and mean three path. The calculations of the ion density distribution around a single dust particle were made taking into account the presence of an external electric field. The dust particle charge was calculated self‐consistently taking into account the ion and the electron fluxes towards the dust particle. A two‐dimensional spatial distribution of the electric potential was found in the assumption of weak spatial anisotropy for the case of a small external electric field. The dipole moment and polarization coefficient of the system of “dust particle ‐ ion cloud” was obtained for different values of the ions mean free path and the external electric field. The results showed that the polarization of such a system is significant, it influences the interaction between different dust particles and should be taken into account. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)