Optical and electrical characteristics of a pin-to-plate dielectric barrier discharge

doi:10.3969/j.issn.1000-1565.2023.01.006

Abstract

Abstract: In this work, a pin-to-plate dielectric barrier discharge device was designed. Air and argon mixture is used as working gas at atmospheric pressure. The variation of optical and electrical characteristics under the two conditions of mixed gas flow and gas non-flow is studied. The vibrational temperature(T_v)of nitrogen molecules is calculated by Boltzmann method and the excited electron temperature(T_exc)is calculated by spectral line relative intensity ratio method. The experimental results show that the input power(P)and T_v increase with the increase of the applied valtage(U_a), while T_exc decreases with the increase of U_a. When U_a is certain, in the gas flow, P increases, T_exc decreases, and T_v remains unchanged. The inelastic collision between high-energy electrons and working gas is qualitatively explained. The results are of great significance to the intensive study of atmospheric pressure plasma dynamics.

Key words: dielectric barrier discharge, plasma, optical and electrical characteristics

CLC Number:

ZHANG Wenxin, WANG Weiwei, LIU Feng, FAN Zhihui, WANG Jingquan, ZHANG Jinan. Optical and electrical characteristics of a pin-to-plate dielectric barrier discharge[J]. Journal of Hebei University(Natural Science Edition), 2023, 43(1): 35-39.

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