Effect of argon on the characteristics of hollow cathode discharge in He-Ar gas

doi:10.3969/j.issn.1000-1565.2023.03.005

Abstract

Abstract: In this paper, the effect of argon concentration on the characteristics of hollow cathode discharge is studied by using a fluid model in the He-Ar mixture gas. The results show that with the increase of argon mole fraction(0—10% ), the discharge current, electron density, helium ion density, argon ion density, and the radial electric field in the cathode sheath region all increase. The radial electric field in the negative glow region and the width of the cathode sheath region decrease with the increase of argon concentration. The increase of electron density and argon ion density is faster than that of helium ion density. When the mole fraction of argon is higher than 5%, the contribution of argon to the discharge is higher than that of helium.

Key words: hollow cathode discharge, He-Ar gas, fluid model, electron density

CLC Number:

O531

DENG Jiasong, ZHAO Xuena, HE Shoujie. Effect of argon on the characteristics of hollow cathode discharge in He-Ar gas[J]. Journal of Hebei University(Natural Science Edition), 2023, 43(3): 257-262.

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