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A volume-weight ing cloud-in-cell model for particle simulation of axially symmetric plasmas

  • Yongdong Li*
  • , Feng He
  • , Chunliang Liu
  • *Corresponding author for this work
  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

Abstract

A volume-weighting cloud-in-cell (VW-CIC) model is developed to implement the particle-in-cell (PIC) simulation in axially symmetric systems. This model gives a first-order accuracy in the cylindrical system, and it is incorporated into a PIC code. A planar diode with a finite-radius circular emitter is simulated with the code. The simulation results show that the VW-CIC model has a better accuracy and a lower noise than the conventional area-weighting cloud-in-cell (AW-CIC) model, especially on those points near the axis. The two-dimensional (2-D) space-charge-limited current density obtained from VW-CIC model is in better agreement with Lau's analytical result. This model is more suitable for 2.5-D PIC simulation of axially symmetric plasmas.

Original languageEnglish
Pages (from-to)2653-2656
Number of pages4
JournalPlasma Science and Technology
Volume7
Issue number1
DOIs
Publication statusPublished - Feb 2005
Externally publishedYes

Keywords

  • Child-Langmuir law
  • Cloud-in-cell
  • Plasma simulation
  • Volume-weighting

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