Spectral line shapes for Grimm type glow discharge diagnostics

Abstract

We report the results of Ar I and Ne I line shapes study in Grimm type glow discharge operating with iron or aluminium cathode in argon and neon. The spectral lines were observed along the axis of cylindrical abnormal glow discharge parallel (side-on) and perpendicular to the cathode surface (end-on). The side-on spectra show spectral line shifting and sometimes simultaneous shifting and splitting in the cathode fall region of glow discharge. The results of measured line shift with available data for dc Stark effect are used for measurement of electric field strength in the cathode fall region of glow discharge.