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 language | English |
|---|---|
| Pages (from-to) | 2653-2656 |
| Number of pages | 4 |
| Journal | Plasma Science and Technology |
| Volume | 7 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2005 |
| Externally published | Yes |
Keywords
- Child-Langmuir law
- Cloud-in-cell
- Plasma simulation
- Volume-weighting
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