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首页> 外文会议>International Symposium on Discharges and Electrical Insulation in Vacuum >Experiment measuring the energy deposition and expansion rate of exploding copper wires in vacuum using negative polarity current
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Experiment measuring the energy deposition and expansion rate of exploding copper wires in vacuum using negative polarity current

机译：使用负电流测量真空中爆炸的铜线的能量沉积和膨胀率的实验

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The electrical explosion of fine metal wire has been used as a common way to investigate the behavior of individual wire in the initial stage of wire-array Z-pinch before the global magnetic field dominates. This paper presents the experimental results of the electrical explosion of copper wires using negative polarity current with magnitude of 1~2kA. The 20μm-diameter copper wires with different lengths are exploded under three different configurations of charging voltage and gas switch pressure. Experimental results show that the wire length decreasing from 2 cm to 0.5 cm gives 2.4 times the energy deposition and results in 45% faster expansion rate. When the charging voltage increases from 16 kV to 22 kV, the energy deposition increases 1.5 times and leads to 90% faster expansion rate for 2cm-long, 45% for 1cm-long and 65% for 0.5cm-long copper wire, respectively. A laser probe is applied to construct the shadowgraphy diagnostic to investigate the distribution and morphology of the exploding product.
机译：细金属丝的电爆炸已被用作研究整体磁场占主导地位之前，在线阵列Z夹的初始阶段研究单根导线行为的常用方法。本文介绍了使用大小为1〜2kA的负极性电流对铜线进行电爆炸的实验结果。在三种不同的充电电压和气体开关压力配置下，爆炸了直径为20μm的不同长度的铜线。实验结果表明，导线长度从2 cm减小到0.5 cm，可提供2.4倍的能量沉积，从而使膨胀速度加快45％。当充电电压从16 kV增加到22 kV时，能量沉积增加1.5倍，从而导致2cm长的铜线的膨胀率提高90％，1cm长的铜线的膨胀率提高45％，而0.5cm长的铜线的膨胀率分别提高65％。用激光探针构造阴影摄影诊断仪，以研究爆炸产物的分布和形态。

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