Self-consistent Simulation of the Coupling Between Plasma and Neutral Gas in N-RIT

This paper deals with the up to now rf plasma simulation using PIC-MCC method for N-RITs. Beside the RF generator and coil parameters a main input parameter for the plasma discharge modeling is the neutral gas density prole inside the thruster. At rst, we investigated these proles depending on the gas inlet position, grid conguration, and amount of gas ow. To handle this task we used the software Flowsim which had been developed at the I. Physikalisches Institut of the University of Giessen. We will present results for a simplied N-RIT with a cylindrical discharge chamber. Further, we will show the dependence of plasma and neutral gas distributions within the ionization chamber. As a consequence a self-consistent combination of the plasma and neutral gas modeling is not necessary.