Hollow hexagonal pattern with surface discharges in a dielectric barrier discharge

Jianyu FENG (冯建宇); Lifang DONG (董丽芳); Caixia LI (李彩霞); Ying LIU (刘莹); Tian DU (杜天); Fang HAO (郝芳)

doi:10.1088/2058-6272/aa594a

Plasma Science and Technology > 2017 > 19(5): 55401-055401. > DOI: 10.1088/2058-6272/aa594a

Jianyu FENG (冯建宇), Lifang DONG (董丽芳), Caixia LI (李彩霞), Ying LIU (刘莹), Tian DU (杜天), Fang HAO (郝芳). Hollow hexagonal pattern with surface discharges in a dielectric barrier discharge[J]. Plasma Science and Technology, 2017, 19(5): 55401-055401. DOI: 10.1088/2058-6272/aa594a

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Hollow hexagonal pattern with surface discharges in a dielectric barrier discharge

1 College of Physics Science and Technology, Hebei University, Baoding 071002, People’s Republic of China 2 Hebei Key Laboratory of Optic-electronic Information Materials, Baoding 071002, People’s Republic of China

Funds: This work was supported by National Natural Science Foun?dation of China (Nos. 11375051 and 11505044), Key Basic Research Project in the application basic research plan of Hebei Province (No. 15961105D) and the Research Foundation of Education Bureau of Hebei Province, China (No. LJRC011).

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Received Date: August 24, 2016

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Abstract

Abstract

The hollow hexagonal pattern involved in surface discharges is firstly investigated in a dielectric barrier discharge system. The spatiotemporal structures of the pattern are studied using an intensified charge-coupled device and photomultiplier. Instantaneous images taken by an intensified charge-coupled device and optical correlation measurements show that the surface discharges are induced by volume discharges. The optical signals indicate that the discharge filaments constituting the hexagonal frame discharge randomly at the first current pulse or the second pulse, once or twice. There is no interleaving of several sub-lattices, which indicates that the ‘memory’ effect is no longer in force due to surface discharges. By using the emission spectrum method, both the molecule vibration temperature and electron density of the surface discharges are larger than that of the volume discharges.
- dielectric barrier discharge,
- hollow hexagonal pattern,
- volume discharges,
- surface discharges,
- spatiotemporal dynamics,
- plasma parameters

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References (16)

References

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