TWO-DIMENSIONAL HYDRODYNAMICS OF UNIFORM ION PLASMA IN ELECTROSTATIC FIELD

Two-dimensional hydrodynamics of ion extraction from uniform quasi-neutral plasma, in electrostatic field has been simulated numerically. experimentally, tunable pulsed lasers produce non-uniform plasma through stepwise photo-excitation and photo-ionization or multi-photo-ionization processes. poisson's equation was solved simultaneously with the equations of mass, and momentum, assuming the maxwell-boltzmann distribution for electrons. in the calculation, the initial density profile at the boundaries has been assumed to be very steep for the ion plasma. in these calculations dynamics of electric potential and the ions density were assessed. the ion extraction time was also estimated from the calculation. the knowledge of spatial distribution of the ions across the cathode is very important for the practical purposes. in this simulation, the spatial distribution of the ion current density across the cathode as well as its temporal distribution was calculated