Dynamics of plasma bullets by nanosecond pulsed micro-hollow cathode discharge within air

Peizhen LI (李佩贞); Zhengchao DUAN (段正超); Tianliang ZHANG (张天亮); Feng HE (何锋); Ruoyu HAN (韩若愚); Jiting OUYANG (欧阳吉庭)

doi:10.1088/2058-6272/ac0719

Plasma Science and Technology > 2021 > 23(8): 85401-085401. > DOI: 10.1088/2058-6272/ac0719

Peizhen LI (李佩贞), Zhengchao DUAN (段正超), Tianliang ZHANG (张天亮), Feng HE (何锋), Ruoyu HAN (韩若愚), Jiting OUYANG (欧阳吉庭). Dynamics of plasma bullets by nanosecond pulsed micro-hollow cathode discharge within air[J]. Plasma Science and Technology, 2021, 23(8): 85401-085401. DOI: 10.1088/2058-6272/ac0719

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Dynamics of plasma bullets by nanosecond pulsed micro-hollow cathode discharge within air

School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China

Funds: This work was supported by National Natural Science Foundation of China (No. 11 475 019).

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Received Date: March 06, 2021
Revised Date: May 27, 2021
Accepted Date: May 31, 2021

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Abstract

Abstract

In this paper, the air plasma jet produced by micro-hollow cathode discharge (MHCD) is investigated. The discharge is powered by a positive nanosecond pulse high voltage supply. The waveforms of the discharge, the images of the jet, the evolution of the plasma bullet and the reactive species are obtained to analyze the characteristics of the MHCD plasma jet. It is found that the length of the plasma jet is almost proportional to the air flow rate of 2–6 slm. Two plasma bullets appear one after another during a single period of the voltage waveform, and both of the two plasma bullets are formed during the positive pulse voltage off. The propagation velocity of the two plasma bullets is on the order of several hundred m/s, which is approximate to that of the air flow. These results indicate that the gas flow has an important influence on the formation of this MHCD plasma jet.
- air plasma jet,
- plasma bullets,
- micro-hollow cathode discharge,
- nanosecond pulse

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1.	Li, J., Duan, Z., He, F. et al. Influence of the pulse polarity on micro-hollow cathode helium plasma jet. Plasma Science and Technology, 2023, 25(7): 075401. DOI:10.1088/2058-6272/acb489

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Dynamics of plasma bullets by nanosecond pulsed micro-hollow cathode discharge within air