Investigation of electrical conductivity and equations of state of non-ideal plasma through underwater electrical wire explosion
Investigation of electrical conductivity and equations of state of non-ideal plasma through underwater electrical wire explosion
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DOI：
10.1063/1.3497010
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发表时间：
2010-11
影响因子：
2.2
通讯作者：
D. Sheftman;Y. Krasik
中科院分区：
文献类型：
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作者：
D. Sheftman;Y. Krasik
介绍了纳秒尺度下铝、铜、钨金属丝水下电爆炸的实验结果和磁流体动力学模拟。实验使用纳秒脉冲发生器进行，具有~ 30 kA振幅和~ 60 ns上升时间电流脉冲。得到了被测材料在0.1 ~ 20 g/cm3密度和0.03 ~ 8 eV温度范围内的电导率。结果表明，对于实验中得到的物理条件，必须对SESAME表中使用的状态方程数据进行修改，才能再现实验结果。此外，它表明，金属的电导率并不始终适合在整个范围内的实验条件与任何一个传输模型提出。介绍了纳秒尺度下铝、铜、钨金属丝水下电爆炸的实验结果和磁流体动力学模拟。实验使用纳秒脉冲发生器进行，具有~ 30 kA振幅和~ 60 ns上升时间电流脉冲。得到了被测材料在0.1 ~ 20 g/cm3密度和0.03 ~ 8 eV温度范围内的电导率。结果表明，对于实验中得到的物理条件，必须对SESAME表中使用的状态方程数据进行修改，才能再现实验结果。此外，它表明，金属的电导率并不始终适合在整个范围内的实验条件与任何一个传输模型提出。
The results of experiments and magnetohydrodynamic simulations of nanosecond time scale underwater electrical explosions of Al, Cu, and W wires are presented. Experiments were performed using a nanosecond pulsed generator with a ∼30 kA amplitude and ∼60 ns rise time current pulse. The electrical conductivity of the tested materials in the density and temperature ranges of 0.1–20 g/cm3 and 0.03–8 eV, respectively, is presented. It is shown that for the physical conditions obtained in these experiments, the equation of state data used in the SESAME tables must be modified in order to reproduce the experimental results. Also, it was shown that the electrical conductivity of the metals does not consistently fit over the entire range of experimental conditions with either of the transport models presented.The results of experiments and magnetohydrodynamic simulations of nanosecond time scale underwater electrical explosions of Al, Cu, and W wires are presented. Experiments were performed using a nanosecond pulsed generator with a ∼30 kA amplitude and ∼60 ns rise time current pulse. The electrical conductivity of the tested materials in the density and temperature ranges of 0.1–20 g/cm3 and 0.03–8 eV, respectively, is presented. It is shown that for the physical conditions obtained in these experiments, the equation of state data used in the SESAME tables must be modified in order to reproduce the experimental results. Also, it was shown that the electrical conductivity of the metals does not consistently fit over the entire range of experimental conditions with either of the transport models presented.