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Temperature of metal wires for nanosecond and microsecond electrical explosions in vacuum

机译:真空中纳秒和微秒电气爆炸的金属线温度

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摘要

Experiments show an inverse correlation between temperature and heating time for the electrical explosion of thin metal wires in vacuum. Faster heating of the wire results in higher energy release in a short time, while slow heating lasts longer but releases less energy before breakdown. Breakdown is a natural barrier to the direct release of Joule energy and an increase in the metal temperature to an abnormally high value. An increase in the current rate from 0.07 to 170 As leads to a decrease in the heating time from 5μs to 5 ns and an increase in the wire temperature from 450 K to 4000 K before the voltage breakdown. This inverse correlation between the heating time and the temperature of the wire in a vacuum can be explained by the inertia of evaporation of the hydrocarbon impurity from the surface of the hot metal.
机译:实验表明了在真空中的薄金属线的电气爆炸之间的温度和加热时间之间的逆相关性。在短时间内,电线的加热速度更快地导致更高的能量释放,而缓慢的加热持续更长时间,但在击穿之前释放更少的能量。故障是对焦耳能量直接释放的自然障碍,并将金属温度的增加与异常高的值。从0.07至170A / NS的电流速率的增加导致加热时间从5μs降低到5 ns,并且在电压击穿之前从450k到4000k的线温度的增加。在真空中的加热时间和电线的温度之间的这种逆相关性可以通过烃杂质从热金属的表面蒸发的惯性来解释。

著录项

  • 来源
    《Journal of Applied Physics》 |2020年第18期|183302.1-183302.6|共6页
  • 作者

    C. S. Sarkisov;

  • 作者单位

    Raytheon Missiles & Defense Directed Energy Division 1300 Eubank Blvd Albuquerque New Mexico 87123 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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