I've already asked a question like that and followed your advice. I started studying: Plasma Physics via Computer Simulation (C K Birdsall and A B Langdon) but I really think that I need again your help.
I will work on a java project: Starfish code ( https://github.com/particleincell/Starfish ).
I I should simulate the plasma generation inside a dischage chamber coupled with a hollow cathode.
I would need to understand how to determine the boundary conditions before starting to set up my simulation
The problem is that even in the plasma physics books I have not found the right equations or models could help me.
Do you have any suggestion?
Thank you! Tommaso