Two-dimensional modeling of a free expansion Plasma Focus, applied to the Sumaj Lauray 720-J device with and without external electrodes

The dynamics of the current sheet of a Plasma Focus device is simulated with a two-dimensional model, in the radial expansion and the axial acceleration phase. The simulation considers the free expansion of the current sheet in hydrogen gas, without cathodes, and the comparison of experimental data with cathodes and without cathodes, using the parameters of Sumaj Lauray Plasma Focus 720 J.