中国物理B ›› 2013, Vol. 22 ›› Issue (4): 45205-045205.doi: 10.1088/1674-1056/22/4/045205
• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇 下一篇
赵屾a, 薛创b, 朱鑫磊a, 张然a, 罗海云a, 邹晓兵a, 王新新a, 宁成b, 丁宁b, 束小建b
Zhao Shen (赵屾)a, Xue Chuang (薛创)b, Zhu Xin-Lei (朱鑫磊)a, Zhang Ran (张然)a, Luo Hai-Yun (罗海云)a, Zou Xiao-Bing (邹晓兵)a, Wang Xin-Xin (王新新)a, Ning Cheng (宁成)b, Ding Ning (丁宁)b, Shu Xiao-Jian (束小建)b
摘要: 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 L·d i/d t 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 flow the resistance of the exploding wires is several tens of Ohms, one order of magnitude higher than the metallic resistance of the wires at room temperature, and then it falls quickly to about 1 Ω , which reflects the physical processes occurring in the electrically exploding wires, i.e., a current transition from the highly resistive wire core to the highly conductive plasma. It was shown that the inductive contribution to the voltage of the X-pinch is less than the resistive contribution. For the wires we used, the wires' material and diameter have no strong influence on the resistance of the X-pinch, which may be explained by the fact that the current flows through the plasma rather than through the metallic wire itself. As a result, the current is almost equally divided between two parallel X-pinches even though the diameter and material of the wires used for these two X-pinches are significantly different.
中图分类号: (Explosions; exploding wires)