Measuring the Evolution of Mass Density Distribution of Wire Explosion
Measuring the Evolution of Mass Density Distribution of Wire Explosion
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DOI：
10.1109/tps.2014.2326464
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发表时间：
2014-06
影响因子：
1.5
通讯作者：
Xinlei Zhu;X. Zou;Shen Zhao;H. Shi;Ran Zhang;Haiyun Luo;Xinxin Wang
中科院分区：
文献类型：
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作者：
Xinlei Zhu;X. Zou;Shen Zhao;H. Shi;Ran Zhang;Haiyun Luo;Xinxin Wang
丝爆是强脉冲电流驱动丝阵Z箍缩负载发展的初始阶段。基于PPG-1型脉冲功率发生器（400 kA/100 ns），研究了10 μm-W金属丝在几十千安电流下的爆炸过程。采用X箍缩点源X射线背光法获得了金属丝爆炸的时间序列图像，并采用基于特定阶跃楔形滤波器的灰度对比度法标定了某时刻爆炸金属丝的质量密度分布。通过对丝爆时间序列图像的图像处理，给出了丝爆质量密度分布的演化过程。
Wire explosion is the initial stage of the development of wire array Z-pinch load driven by high pulsed current. Based on the pulsed power generator PPG-1 (400 kA/100 ns), the process of 10-μm-W wire explosion at tens of kiloamperes was investigated. The time sequence images of wire explosion were obtained by X-ray backlighting with X-pinch X-ray point source, and the mass density distribution of the exploding wire at a certain time was calibrated by method of grayscale contrast based on a particular step wedge filter. By image processing of the time sequence images of wire explosion, the evolution of mass density distribution of wire explosion was presented.