The EM-electrostatic module of PLASIMO calculates the electrostatic potential and the electric field distributions in plasma and dielectric materials with a specified dielectric permittivity. The volume and surface charge density profiles are user-specified. The custom expressions in PLASIMO allow any function of time to be specified.
Below are examples of steady-state and time-dependent electrostatic models.
One dimensional electrostatic model
One dimensional model describing the potential distribution of a parallel plate. The grounded electrode is covered with dielectric with relative permittivity of 6. The volume charges are prescribed with uniform density of 3\(\cdot\)10-2 C m-3.
A time dependent amplitude modulated voltage is applied to the powered electrode. The exact specification of the applied voltage is shown on the screen-shot below:
Screen capture of 1D EM simulation. Calculated spatial potential distribution (left) and the applied time-dependent voltage (right).
1, 2 and 3 dimensional electrostatic models
The screen-shots below show electrostatic potential distribution solved in 1, 2 and 3 dimensions with prescribed volume and surface charge densities. The electrostatic potential is solved inside two materials with different relative dielectric permittivity: \(\epsilon_r\) = 1.0 for the left region and \(\epsilon_r\) = 6.0 for right region.
1, 2 and 3 dimensional calculations of the electrostatic potential