Using the Modified Lee Model Code to Calculate the Optimum Length of NiZn Ferrite to Enhance the DPF Argon SXR Emission

A modified version of the Lee Model Code with better calculation of the magnetic field inside the Dense Plasma Focus (DPF) tube has been used to investigate the NiZn ferrite effect on the Amirkabir Plasma Focus (APF) machine behavior. It has been explained how various lengths of the ferrite can affect the discharge current trace.The minimum ferrite length which had sensible effects on APF working in 10 kV filled with 0.1-Torr argon has been determined. Regarding the optimum conditions for energy-transfer and argon Soft X-Ray (SXR) emission, the optimum length of the NiZn ferrite has been calculated for various charging voltages and pressures and a scaling-law curve has been presented. Measurements have proved increase in the SXR emission by employing ferrites.