Progress made in kinetic trajectory simulation model for the understanding of plasma sheath

Due to sharp gradients of physical parameters in the plasma sheath region, that forms whenever plasma is confined using material walls, kinetic treatment becomes necessary. The kinetic trajectory simulation model that was initially developed for studying bounded plasmas and applied to simple one dimensional electrostatic plasma sheath has been improved by including various situations like oblique magnetic field, collision, interactive walls, multi-component plasmas, etc. Progress made in developing the kinetic trajectory simulation model and its application for the understanding of magnetized plasma sheath will be presented. In particular, the response of carbon and tungsten surfaces to hydrogen plasma and the effect of temperature in two-ion species magnetized plasma sheath will be discussed. Being a kinetic model, it can be used to gain better insight in various bounded plasma problems, where fluid theory is not reliable or even shows singularity.