Simulations of several finite-sized objects in plasma

Interaction of plasma with finite-sized objects is one of central problems in the physics of plasmas. Since object charging is often nonlinear and involved, it is advisable to address this problem with numerical simulations. First-principle simulations allow studying trajectories of charged plasma particles in self-consistent force fields. One of such approaches is the particle-in-cell (PIC) method, where the use of spatial grid for the force calculation significantly reduces the computational complexity. Implementing finite-sized objects in PIC simulations is often a challenging task. In this work we present simulation results and discuss the numerical representation of objects in the DiP3D code, which enables studies of several independent objects in various plasma environments.