Numerical simulation of atmospheric pulse-modulated radio-frequency glow discharge ignition characteristics assisted by a pulsed discharge

Chengxian PAN (潘呈献); Zhengming SHI (施政铭); Qianhan HAN (韩乾翰); Ying GUO (郭颖); Jianjun SHI (石建军)

doi:10.1088/2058-6272/ab4d7d

Plasma Science and Technology > 2020 > 22(1): 15405-015405. > DOI: 10.1088/2058-6272/ab4d7d

Chengxian PAN (潘呈献), Zhengming SHI (施政铭), Qianhan HAN (韩乾翰), Ying GUO (郭颖), Jianjun SHI (石建军). Numerical simulation of atmospheric pulse-modulated radio-frequency glow discharge ignition characteristics assisted by a pulsed discharge[J]. Plasma Science and Technology, 2020, 22(1): 15405-015405. DOI: 10.1088/2058-6272/ab4d7d

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Numerical simulation of atmospheric pulse-modulated radio-frequency glow discharge ignition characteristics assisted by a pulsed discharge

1 College of Science, Donghua University, Shanghai 201620, People's Republic of China
2 Member of Magnetic Confinement Fusion Research Center, Ministry of Education of People's Republic of China, Shanghai 201620, People's Republic of China
3 Shanghai Center for High Performance Fibers and Composites, Center for Civil Aviation Composites of Donghua University, Shanghai 201620, People's Republic of China

Funds: This work was funded by National Natural Science Foundation of China (Nos. 11875104 and 11475043) and open fund of Shanghai center for high performance fibers and composites (No. X12811901/012) for providing financial support.

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Received Date: August 15, 2019
Revised Date: October 11, 2019
Accepted Date: November 13, 2019

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Abstract

Abstract

A one-dimensional self-consistent fluid numerical model was developed to study the ignition characteristics of a pulse-modulated (PM) radio-frequency (RF) glow discharge in atmospheric helium assisted by a sub-microsecond voltage excited pulsed discharge. The temporal evolution of discharge current density and electron density during PM RF discharge burst was investigated to demonstrate the discharge ignition characteristics with or without the pulsed discharge. Under the assistance of pulsed discharge, the electron density in RF discharge burst reaches the magnitude of 1.87×10¹⁷ m⁻³ within 10 RF cycles, accompanied by the formation of sheath structure. It proposes that the pulsed discharge plays an important role in the ignition of PM RF discharge burst. Furthermore, the dynamics of PM RF glow discharge are demonstrated by the spatiotemporal evolution of the electron density with and without pulsed discharge. The spatial profiles of electron density, electron energy and electric field at specific time instants are given to explain the assistive role of the pulsed discharge on PM RF discharge ignition.
- atmospheric glow discharge,
- numerical simulation,
- discharge ignition,
- pulsemodulation

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References (19)

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