Numerical Studies on the Plasma-Induced Electric Field Distributions Under Different Electrode Configurations

In the ion extraction process, the spatiotemporal distributions of the electric fields under different electrode configurations may have a significant influence on the charged particle transport characteristics. In this study, with the existing □-type and M-type plate configurations as examples, the spatiotemporal distributions of the electric fields, the number fluxes of the charged particles to the electrodes, as well as the corresponding collection area on the electrodes, are studied based on the particle-in-cell (PIC) simulations. This research not only deepens the understandings to the mechanisms of non-equilibrium charged particle transports, but also provides new ideas for designing novel electrode configurations to improve the number fluxes of the extracted charged particles in bounded decaying plasmas.