Influence of Excitation Processes on the Shape of Argon and Neon Lines |
| A. Bielski, R. Ciuryło, D. Lisak and R.S. Trawiński Institute of Physics, Nicholas Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland |
| Received: September 21, 1999; revised version November 30, 1999 |
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| Shapes of self-broadened argon lines 687.1 nm (4d5-2p10), 703.0 nm (3s5-2p9), 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 Ar+2 (or Ne+2) 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 superposition 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. |
| DOI: 10.12693/APhysPolA.97.275 PACS numbers: 32.70.-n, 33.70.-w, 34.20.-b |