Research on channel resistance and thermal effect characteristics of spark gap switch

Zhang Beizhen; Gan Yanqing; Li Chunxia; Li Fei; Jin Xiao; Song Falun

doi:10.11884/HPLPB202436.240311

Volume 36 Issue 11

Nov. 2024

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Zhang Beizhen, Gan Yanqing, Li Chunxia, et al. Research on channel resistance and thermal effect characteristics of spark gap switch[J]. High Power Laser and Particle Beams, 2024, 36: 115019. doi: 10.11884/HPLPB202436.240311

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Zhang Beizhen, Gan Yanqing, Li Chunxia, et al. Research on channel resistance and thermal effect characteristics of spark gap switch[J]. High Power Laser and Particle Beams, 2024, 36: 115019. doi: 10.11884/HPLPB202436.240311

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Research on channel resistance and thermal effect characteristics of spark gap switch

doi: 10.11884/HPLPB202436.240311

National Key Laboratory of Science and Technology on Advanced Laser and High Power Microwave, Institute of Applied Electronics, CAEP, Mianyang 621900, China

Received Date: 2024-09-06
Accepted Date: 2024-10-26
Rev Recd Date: 2024-10-26

Available Online: 2024-11-01

Publish Date: 2024-11-01

Abstract

Abstract

A study was conducted on the spark channel resistance and thermal effect characteristics of a two-electrode spark gap switch applied to a high-power repetition-rate Marx-type pulse power source. The influencing factors of the thermal effect of the spark gap channel resistance were analyzed, and the temperature and pressure changes inside the switch chamber under continuous repetition-rate working conditions were studied. The research results indicate that the pressure and temperature inside the switch chamber show a trend of rapid increase followed by slow increase and stabilization with the increase of working time. The increase of pulse current has a significant effect on the increase of heat deposition. Based on the two-electrode spark gap switch used in this article, 9 000 pulses were continuously operated under the conditions of peak conduction current of 14.7 kA and pulse width of 160 ns. The discharge channel of the switch generated about 36.6 kJ of heat. During the current conduction time, the average resistance of the spark channel was calculated to be about 0.12 Ω through Joule heating effect.
- spark gap switch,
- Joule heating effect,
- repetition-rate,
- pulsed power,
- high power

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References(24)

References

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