Influence of Insulated Cathode on Electric Explosion of Parallel Double Wire in Vacuum

被引：0
|
作者：
Lü N. [1 ]
Zou X. [1 ]
Shi H. [1 ]
Wang X. [1 ]
机构：
[1] Department of Electrical Engineering, Tsinghua University, Beijing
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Deposition energy; Electrical explosion of wire; Insulated cathode; Polarity effect; Radial electric field;
D O I：
10.13336/j.1003-6520.hve.20181205006
中图分类号：
学科分类号：
摘要：
The polarity effect exists in the electrical explosion of wires(EEW) in vacuum. Changing the direction and value of the radial electric field can change the deposition energy of EEW. Consequently, we adopted an insulated cathode(cathode with an embedded insulator) to improve the distribution of surface radial electric field of parallel double-wire load. In order to verify the effectiveness of this method to improve the deposition energy of EEW, we carried out simulation of electrostatic field under two types of electrodes(an insulated cathode and a normal cathode). Simulation results show that the insulated cathode can effectively improve the distribution of radial electric field on the surface of parallel wires: changing the negative direction of radial electric field into positive direction, thus suppressing the electron emission of wire surface. The experimental results based on a PPG-3 device further verify the conclusion that the insulated cathode can significantly improve the deposition energy in wires(from 3.2 eV to 12.5 eV) and result in a better electric explosion effect with a faster expansion rate(from 1.23 eV to 3.95 eV) and higher vaporization ratio. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：3020 / 3024
页数：4
相关论文
共 22 条
  • [1] Lebedev S.V., Beg F.N., Bland S.N., Et al., Effect of core-corona plasma structure on seeding of instabilities in wire array Z pinches, Physical Review Letters, 85, 1, pp. 98-101, (2000)
  • [2] Zhu X., Zou X., Zhao S., Et al., Mass density evolution of wire explosion observed using X-Ray backlight, IEEE Transactions on Plasma Science, 42, 10, pp. 3221-3225, (2014)
  • [3] Chuvatin A.S., Kokshenev V.A., Aranchuk L.E., Et al., An inductive scheme of power conditioning at mega-ampere currents, Laser & Particle Beams, 24, 3, pp. 395-401, (2006)
  • [4] Stenerhag B., Handel S.K., Gohle B., Effect of wire parameters on the emission of hard X rays from exploding wires, Journal of Applied Physics, 42, 5, pp. 1876-1882, (1971)
  • [5] Mao Z., Zou X., Wang X., Et al., Evolution of the electrically exploding wire observed with a Mach-Zehnder interferometer, Applied Physics Letters, 94, 18, pp. 181501-1815013, (2009)
  • [6] Haines M.G., A review of the dense Z-pinch, Plasma Physics & Controlled Fusion, 53, 9, (2011)
  • [7] Shao T., Zhang C., Wang R., Et al., Atmospheric-pressure pulsed gas discharge and pulsed plasma application, High Voltage Engineering, 42, 3, pp. 685-705, (2016)
  • [8] Zou X., Mao Z., Wang X., Et al., Nanopowderproduction by gas-embedded electrical explosion of wire, Chinese Physics B, 22, 4, pp. 350-353, (2013)
  • [9] Clerouin J., Noiret P., Blottiau P., Et al., A database for equations of state and resistivities measurements in the warm dense matter regime, Physics of Plasmas, 19, 8, (2012)
  • [10] Tong D., Zhu X., Zou X., Et al., Numerical simulation of the preheating process of pulse discharge in water, High Voltage Engineering, 45, 5, pp. 1461-1467, (2019)
123