Timing of the x-ray burst from paralleled X-pinches

The current and the voltage of an X-pinch were measured. The inductance of the X-pinch was assumed to be a constant and estimated by the calculation of the magnetic field based on the well-known Biot-Savart´s Law. The voltage of the inductance was calculated with Ldi/dt and subtracted from the measured voltage of the X-pinch. Then, the resistance of the X-pinch was determined and the following results were obtained. At the start of the current the resistance of the exploding wires is several tens of Ohms, and then it falls down quickly to about 1Ω, which reflects a current transition from the overheated and highly resistive wire core to the highly conductive plasma. The resistance is only a little bit lower than the impedance. It seems that the material and diameter of the wires have no strong influence on the resistance.