Numerical Calculation of a 2.8 kJ Plasma Focus Characteristics Using a Five-Phase Model

A radiative five-phase model for plasma focus (S. Lee model) (axial phase, inward radial phase, reflected shock phase, pinch phase and expanded phase) was applied to a 2.8 kJ plasma focus device to find the plasma parameters and the SXR radiation emitted from the plasma pinch at different gas pressures. Fitting the model parameters, the calculated and measured current waveforms at 0.75 Torr of Argon were obtained and compared. The results were tabulated for the optimal operating conditions and compared with the same features of other different PF devices (NX2, PF1000, PF400, and DPF78). 1