Investigation on the streamer propagation in atmospheric pressure helium plasma jet by the capacitive probe

Wenchao ZHU (朱文超); Bangdou HUANG (黄邦斗); Ximing ZHU (朱悉铭); Wencong CHEN (陈文聪); Yikang PU (蒲以康)

doi:10.1088/2058-6272/ab6a45

Plasma Science and Technology > 2020 > 22(5): 52001-052001. > DOI: 10.1088/2058-6272/ab6a45

Wenchao ZHU (朱文超), Bangdou HUANG (黄邦斗), Ximing ZHU (朱悉铭), Wencong CHEN (陈文聪), Yikang PU (蒲以康). Investigation on the streamer propagation in atmospheric pressure helium plasma jet by the capacitive probe[J]. Plasma Science and Technology, 2020, 22(5): 52001-052001. DOI: 10.1088/2058-6272/ab6a45

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Investigation on the streamer propagation in atmospheric pressure helium plasma jet by the capacitive probe

¹ State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense AMS, Beijing 102205, People's Republic of China
² Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China
³ Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
⁴ Harbin Institute of Technology, Harbin 150001, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Nos. 10775087 and 51907190), and the State Key Laboratory of NBC Protection for Civilian (SKLNBC 2019–16).

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Received Date: November 07, 2019
Revised Date: January 07, 2020
Accepted Date: January 09, 2020

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Abstract

Abstract

In this letter, the streamer propagation in the atmospheric pressure helium plasma jet with a floating electrode nozzle driven by the kHz AC power supply is investigated. The current signal induced by the space charges and the mean propagation velocity of the guided ionization waves are measured by the capacitive probe method in the discharge region. The space charges in the guided ionization waves are found to increase with the applied voltage, which enhances both the electric field near the streamer head and the propagation velocity. The applicability of the streamer mechanism to the propagation of the guided ionization waves is validated by this electrical diagnostic method.
- streamer propagation,
- capacitive probe,
- guided ionization waves

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References (24)

References

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