中国物理B ›› 2023, Vol. 32 ›› Issue (2): 25201-025201.doi: 10.1088/1674-1056/ac673d

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Ignition dynamics of radio frequency discharge in atmospheric pressure cascade glow discharge

Ya-Rong Zhang(张亚容)1, Qian-Han Han(韩乾翰)1, Jun-Lin Fang(方骏林)1, Ying Guo(郭颖)1,2, and Jian-Jun Shi(石建军)1,2,†   

  1. 1 College of Science, Donghua University, Shanghai 201620, China;
    2 Textile Key Laboratory for Advanced Plasma Technology and Application, Donghua University, Shanghai 201620, China
  • 收稿日期:2022-01-29 修回日期:2022-04-01 接受日期:2022-04-14 出版日期:2023-01-10 发布日期:2023-01-10
  • 通讯作者: Jian-Jun Shi E-mail:jshi@dhu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11875104 and 12175036).

Ignition dynamics of radio frequency discharge in atmospheric pressure cascade glow discharge

Ya-Rong Zhang(张亚容)1, Qian-Han Han(韩乾翰)1, Jun-Lin Fang(方骏林)1, Ying Guo(郭颖)1,2, and Jian-Jun Shi(石建军)1,2,†   

  1. 1 College of Science, Donghua University, Shanghai 201620, China;
    2 Textile Key Laboratory for Advanced Plasma Technology and Application, Donghua University, Shanghai 201620, China
  • Received:2022-01-29 Revised:2022-04-01 Accepted:2022-04-14 Online:2023-01-10 Published:2023-01-10
  • Contact: Jian-Jun Shi E-mail:jshi@dhu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11875104 and 12175036).

摘要: A cascade glow discharge in atmospheric helium was excited by a microsecond voltage pulse and a pulse-modulated radio frequency (RF) voltage, in which the discharge ignition dynamics of the RF discharge burst was investigated experimentally. The spatio-temporal evolution of the discharge, the ignition time and optical emission intensities of plasma species of the RF discharge burst were investigated under different time intervals between the pulsed voltage and RF voltage in the experiment. The results show that by increasing the time interval between the pulsed discharge and RF discharge burst from 5 μs to 20 μs, the ignition time of the RF discharge burst is increased from 1.6 μs to 2.0 μs, and the discharge spatial profile of RF discharge in the ignition phase changes from a double-hump shape to a bell-shape. The light emission intensity at 706 nm and 777 nm at different time intervals indicates that the RF discharge burst ignition of the depends on the number of residual plasma species generated in the pulsed discharges.

关键词: pulsed voltage modulated radio frequency, radio frequency (RF) discharge burst, residual plasma species

Abstract: A cascade glow discharge in atmospheric helium was excited by a microsecond voltage pulse and a pulse-modulated radio frequency (RF) voltage, in which the discharge ignition dynamics of the RF discharge burst was investigated experimentally. The spatio-temporal evolution of the discharge, the ignition time and optical emission intensities of plasma species of the RF discharge burst were investigated under different time intervals between the pulsed voltage and RF voltage in the experiment. The results show that by increasing the time interval between the pulsed discharge and RF discharge burst from 5 μs to 20 μs, the ignition time of the RF discharge burst is increased from 1.6 μs to 2.0 μs, and the discharge spatial profile of RF discharge in the ignition phase changes from a double-hump shape to a bell-shape. The light emission intensity at 706 nm and 777 nm at different time intervals indicates that the RF discharge burst ignition of the depends on the number of residual plasma species generated in the pulsed discharges.

Key words: pulsed voltage modulated radio frequency, radio frequency (RF) discharge burst, residual plasma species

中图分类号:  (Elementary processes in plasmas)

  • 52.20.-j
52.40.-w (Plasma interactions (nonlaser)) 52.80.-s (Electric discharges)