Fabrication and characteristics of mather type plasma focus system

Mather type plasma focus system is designed and fabricated, and electrical behaviors and the characteristics of the plasma are investigated. The discharge current is measured with a Rogowski coil, and the external resistance and inductance of the system are found to be 20 mΩ, 0.2 uH, repectively from the measured voltage signals and current signals, and discharge inductance, magnetic, and mechanical energy are calculated. The speed of the plasma current sheath in the acceleration phase is found to vary as P-0.25 * V0.38 and its value is about is 106 cm/sec. The electron temperature in the plasma is determined from the measurement of the X-ray transmittance with the number of X-ray filters and its value is found to be about 1 keV. The size of plasma, measured using X-ray pin-hole camera, is about 17(dia.) * 30(length)mm2. (Author)