10:00 AM - 10:15 AM
[PPS23-17] Particle simulations on plasma and dust environment near lunar vertical holes
Keywords:Moon, vertical hole, space plasma, lunar surface charging, dust grain, PIC simulation
In the present study, we apply our original particle-in-cell simulator EMSES, which have been used to study spacecraft-plasma interactions, to assessment of day-side plasma environment around lunar vertical holes. We have a three-dimensional computational domain including a simplified lunar hole structure and introduce a solar wind plasma inflow to the lunar surface. We also simulate the photoelectron emission from the lunar surface by taking into account the presence or absence of sunlight illumination, and its incident angle. We will show simulation results on the properties of lunar surface charging near the hole and its dependence on changing solar wind plasma conditions. We also report the progress of further investigations into dust grain environment around the hole, based on the electrostatic environment self-consistently computed by our simulator.