A SELF-CONSISTENT OPEN BOUNDARY MODEL FOR PARTICLE SIMULATION IN PLASMAS

A boundary-free particle simulation model, applicable to a local open system in which the internal plasma is continuously and smoothly conne cted to an external plasma source such as a current generator, is deve loped. We present this formalism and examine the range of applicabilit y of this procedure. This scheme assures a balance between the outgoin g and incoming particle fluxes through the system boundaries at each t ime step. The numerical code developed on this principle is applied to an ion acoustic double layer under the condition that the system is c onnected to a constant current generator to confirm the soundness and validity of the code.