Abstract

5-2p 10 ), 703.0 nm (3s 5 -2p 9 ), 750.3 nm (2p1-1S2) as well as the neon line 748.8 nm (3d3-2p10) emitted from glow discharges at low pressures were analysed using a Fabry- Perot interferometer. We showed that the dissociative recombination of Are (or N ) molecular ions which gives rise to the density of non-thermalized atoms, may be regarded as the main process responsible for the distortion of the profiles of the above lines. The distorted profiles were analysed as super- position of the Ballik profile for thermalized atoms and the modified Ballik profile for non-thermalized atoms. The Lorentzian and Gaussian widths as well as relative densities of non-thermalized and thermalized atoms were . determined.

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