Abstract
We report the results of an experimental study of Ne II 369.421 nm, 371.308 nm, and 372.711 nm spectral line shapes by means of the optical emission spectroscopy The spectral lines are recorded in the cathode sheath region of an abnormal glow discharge operated in pure neon and by using different cathode materials: copper (Cu), iron (Fe), and titanium (Ti). The studied lines have complex spectral profiles which enabled us to determine important discharge parameters. In this work we present the correlation between the width of pedestals of the side-on recorded Ne II spectral lines and the electric field strength distribution as well as the correlation between line pedestal width and the distance of the recording position from the cathode.
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