BOLTZMANN-FOKKER-PLANCK KINETIC SOLVER WITH ADAPTIVE MESH IN PHASE SPACE Simulation of kinetic transport of electrons and ions in low temperature plasmas is critical to developing new technologies. Fokker-Planck and Boltzmann kinetic solvers in 1d2v phase space were developed with adaptive Cartesian meshes. Spherical coordinates in velocity space; Cartesian, cylindrical, spherical systems physical space enable high precision. Coupled with electrostatic (Poisson) solver with AMR, fundamental but technology relevant processes are being investigated. Ion kinetics during plasma expansion Runaway electrons Gas breakdown dynamics Calculated Electron Velocity Distribution Functions HIGHLIGHT DOE Plasma Science Center Control of Plasma Kinetics August 2018 1

DUST PARTICLE DYNAMICS IN AFTERGLOWS OF RF PLASMAS Modeling and particle visualization have characterized the particle dynamics and plasma properties in the afterglow of RF dusty plasmas. Numerical results indicate that electron desorption from particles leads to an initial increase of electron density in the afterglow. Visualization indicates particle trapping locations might influence afterglow plasma properties. The evolution of electron and ion densities in the plasma after glow (top) Ar dusty plasma and (bottom) particle trapping locations in the plasma. DOE Plasma Science Center Control of Plasma Kinetics HIGHLIGHT August 2018 2