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1D - HF parallel plate discharge

A simple 1D setup in Argon with one grounded and one HF excitated parallel plate. This setup has been motivated by Turner et al. (2013)1) knowing how unreliable PIC-MC modeling results can be without comprehensive testing of the underlying implementation.

Starting the simulation

The setup file contains four parameter files P1.par, P2.par, P3.par and P4.par which can be started with up to 8 CPUs each. Start the simulation (e.g. P1.par) with:

$ rvmmpi -picmc 8 P1.par


The simulation plots, among others, electron and Ar+ density profiles along domain axis which can be compared against accordant benchmark results: Turner13 - supplementary material. The comparison against these benchmark results can also be seen in the figures below. As a side node: There is a deviation for the low pressure case P1 when using the “wrong” electron energy partitioning model for ionization collisions. We prefer the simpler model 'one-takes-it-all' where the incident electron keeps the remaining energy whereas Turner et. al. rely on 'equal-share' in which the energy is equally divided between incident and secondary electron. The truth should be lying somewhere in between. However, we implemented a switch for each partitioning model so that the user can choose.

Comparison against benchmark resultsResults from different electron energy partitioning models

Figure 1: Comparison against benchmark results with only minor deviation (left). Different electron energy partitioning models for ionization events yield deviations in the low pressure case P1 (right).

Turner, M.M.; Derzsi, A.; Donkó, Z.; Eremin, D.; Kelly, S.J.; Lafleur, T.; Mussenbrock, T.: Simulation benchmarks for low-pressure plasmas: Capacitive discharges, Physics of Plasmas 20 (2013) 013507