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The optical diagnosis of electrical wire explosion under a microsecond current pulse
Yang Meng1, Meng Yuan Tang1, Haruki Xue1
1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiao Tong University, Xi'an 710049, China.
The Review of Scientific Instruments
|October 1, 2022
Summary
This study used optical diagnosis to analyze electrical wire explosions. Copper wire explosions showed uneven ionization and rapid expansion, while tantalum wire explosions were more uniform with continuous spectra.
Area of Science:
- Physics
- Materials Science
- Plasma Physics
Background:
- Electrical wire explosions are crucial in research and industry.
- Optical diagnosis offers insights into explosion dynamics.
- Understanding plasma evolution is key to controlling these events.
Purpose of the Study:
- To establish an experimental platform for diagnosing electrical wire explosions.
- To analyze the spatial-temporal evolution and spectra of copper and tantalum wire explosions.
- To compare the plasma characteristics of different materials under electrical explosion.
Main Methods:
- Designed and implemented a low-jitter trigatron switch and trigger generator for precise synchronization.
- Utilized an experimental platform to capture optical radiation from electrical wire explosions.
- Analyzed spatial-temporal evolution and self-emission spectra of copper and tantalum wire plasmas.
Main Results:
- Copper wire explosions exhibited inhomogeneous ionization and rapid discharge channel expansion.
- Copper wire spectra transitioned from continuum to line spectra during plasma dissipation.
- Tantalum wire explosions showed uniform channel development in a gas-liquid phase, with continuous spectra.
Conclusions:
- Optical diagnosis effectively reveals distinct plasma behaviors in copper versus tantalum wire explosions.
- Material properties significantly influence the spatial-temporal evolution and spectral characteristics of electrical explosions.
- The study provides valuable data for understanding and controlling electrical wire explosion phenomena.
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