Optical Emission Spectroscopy of H $_{mathrm {gamma }}$ , H $_{mathrm {alpha }}$ , and H $_{mathrm {beta }}$ in a Glow Discharge Mixture of Ar/H₂

摘要

In this paper, the addition of Ar to H is experimentally investigated. This paper primarily aims to observe the effects that this addition has on the intensity of hydrogen emission lines in a glow discharge mixture. The total pressure was 3 torr, at a power level of 3.9 W. Optical emission spectroscopy was used for plasma characterization, and the principal species observed were H (434 nm), H (486.1 nm), H (656.3 nm), and H (603.1 nm), and Ar I (750.5 nm), Ar I (763.5 nm), and Ar I (811.6 nm). The electron temperature and ion density were determined by a double Langmuir probe. The electron temperature was found to be in the range of 2.5–6.5 eV, and the ion concentration was on the order of cm.