Particle Simulation of Charging Characteristic of a Micro-sized Dust Particle Immersed into Low Temperature Plasma

DOI

10.2991/eame-15.2015.207How to use a DOI?

Keywords

dust particle; charging; low temperature plasma; particle simulation

Abstract

The charging characteristic of micro-sized particulates immersed into low temperature argon plasma was studied via particle simulation employing Particle-in-Cell (PIC) and Monte-Carlo (MC) hybrid method. The net charge of a dust particle was determined by counting the number of electrons and ions reached the particle surface. The electric potential of particle surface was evaluated by the capacitor model. Meanwhile, the profiles of charged particle number densities and self-consistent electric field were obtained. Both electron and ion number densities dramatically varied near the particle surface within the sheath. The simulation was verified by comparing the computational results with the data from existing simulation and theoretical analysis. The comparison showed that the numerical model overestimating the charge number for micro-sized particles. The research indicates that the charge of a particle is proportional to its radius and the electron temperature. However, the relationship is not strictly linear.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Z. Qian
AU  - H. Wang
PY  - 2015/07
DA  - 2015/07
TI  - Particle Simulation of Charging Characteristic of a Micro-sized Dust Particle Immersed into Low Temperature Plasma
BT  - Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering
PB  - Atlantis Press
SP  - 767
EP  - 769
SN  - 2352-5401
UR  - https://doi.org/10.2991/eame-15.2015.207
DO  - 10.2991/eame-15.2015.207
ID  - Qian2015/07
ER  -