中国物理B ›› 2022, Vol. 31 ›› Issue (6): 65205-065205.doi: 10.1088/1674-1056/ac601a

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Influence of oxygen addition on the discharge characteristics of an argon plasma jet at atmospheric pressure

Junyu Chen(陈俊宇)1, Na Zhao(赵娜)1,2, Jiacun Wu(武珈存)1, Kaiyue Wu(吴凯玥)1, Furong Zhang(张芙蓉)1, Junxia Ran(冉俊霞)1, Pengying Jia(贾鹏英)3, Xuexia Pang(庞学霞)3, and Xuechen Li(李雪辰)1,3,†   

  1. 1 College of Physics Science&Technology, Hebei University, Baoding 071002, China;
    2 School of Mathematics and Physics, Handan University, Handan 056005, China;
    3 Institute of Life Science&Green Development, Hebei University, Baoding 071002, China
  • 收稿日期:2022-01-24 修回日期:2022-02-22 接受日期:2022-03-23 出版日期:2022-05-17 发布日期:2022-05-26
  • 通讯作者: Xuechen Li E-mail:plasmalab@126.com,xcli@mail.hbu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51977057 and 11875121), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2020201025 and A2019201100), the Natural Science Interdisciplinary Research Program of Hebei University (Grant Nos. DXK202011 and DXK201908), Post-graduate's Innovation Fund Project of Hebei Province, China (Grant Nos. CXZZBS2019023 and CXZZBS2019029), and Postgraduate's Innovation Fund Project of Hebei University (Grant Nos. HBU2021ss063 and HBU2021bs011).

Influence of oxygen addition on the discharge characteristics of an argon plasma jet at atmospheric pressure

Junyu Chen(陈俊宇)1, Na Zhao(赵娜)1,2, Jiacun Wu(武珈存)1, Kaiyue Wu(吴凯玥)1, Furong Zhang(张芙蓉)1, Junxia Ran(冉俊霞)1, Pengying Jia(贾鹏英)3, Xuexia Pang(庞学霞)3, and Xuechen Li(李雪辰)1,3,†   

  1. 1 College of Physics Science&Technology, Hebei University, Baoding 071002, China;
    2 School of Mathematics and Physics, Handan University, Handan 056005, China;
    3 Institute of Life Science&Green Development, Hebei University, Baoding 071002, China
  • Received:2022-01-24 Revised:2022-02-22 Accepted:2022-03-23 Online:2022-05-17 Published:2022-05-26
  • Contact: Xuechen Li E-mail:plasmalab@126.com,xcli@mail.hbu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51977057 and 11875121), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2020201025 and A2019201100), the Natural Science Interdisciplinary Research Program of Hebei University (Grant Nos. DXK202011 and DXK201908), Post-graduate's Innovation Fund Project of Hebei Province, China (Grant Nos. CXZZBS2019023 and CXZZBS2019029), and Postgraduate's Innovation Fund Project of Hebei University (Grant Nos. HBU2021ss063 and HBU2021bs011).

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摘要： Plasma jet is an important low-temperature plasma source in extensive application fields. To promote the production of active oxygen species, oxygen is often introduced into the inert working gas. However, the influence of oxygen content on the discharge characteristics of an argon plasma jet is not clear. Aim to this status, an argon plasma jet in a single-electrode geometry is employed to investigate the influence of oxygen concentration (CO) on discharge aspects. Results indicate that with increasing CO (≤ 0.6%), the plume transits from a diffuse morphology to a hollow structure. Electrical and optical measurements reveal that both discharge number per voltage cycle and pulse intensity alter with varying CO. Moreover, discharge morphologies of negative and positive discharges obtained by fast photograph also shift with varying CO. Besides, optical emission spectra are collected to investigate atomic CO, electron density, and electron temperature. The results mentioned above are explained qualitatively, which are believed to be of great significance for the applications of atmospheric pressure plasma jet.

关键词: plasma jet, oxygen addition, fast photography, optical emission spectra

Abstract: Plasma jet is an important low-temperature plasma source in extensive application fields. To promote the production of active oxygen species, oxygen is often introduced into the inert working gas. However, the influence of oxygen content on the discharge characteristics of an argon plasma jet is not clear. Aim to this status, an argon plasma jet in a single-electrode geometry is employed to investigate the influence of oxygen concentration (CO) on discharge aspects. Results indicate that with increasing CO (≤ 0.6%), the plume transits from a diffuse morphology to a hollow structure. Electrical and optical measurements reveal that both discharge number per voltage cycle and pulse intensity alter with varying CO. Moreover, discharge morphologies of negative and positive discharges obtained by fast photograph also shift with varying CO. Besides, optical emission spectra are collected to investigate atomic CO, electron density, and electron temperature. The results mentioned above are explained qualitatively, which are believed to be of great significance for the applications of atmospheric pressure plasma jet.

Key words: plasma jet, oxygen addition, fast photography, optical emission spectra

中图分类号:  (Other gas discharges)

  • 52.80.Tn
52.50.Dg (Plasma sources) 52.70.Kz (Optical (ultraviolet, visible, infrared) measurements)