Original scientific paper
Shift and broadening of sodium nS-3P and mD-3P transitions in high pressure NaCd and NaHg discharges
Željka Mioković
; Physics Department, Faculty of Science, University of Zagreb, Bijenička 32 HR-10 002 Zagreb, Croatia; Faculty of Electrical Engineering, University of Osijek, K. Trpimira 2B 31 000 Osijek, Croatia
Darko Balković
; Physics Department, Faculty of Science, University of Zagreb, Bijenička 32 HR-10 002 Zagreb, Croatia
Damir Veža
; Physics Department, Faculty of Science, University of Zagreb, Bijenička 32 HR-10 002 Zagreb, Croatia
Abstract
We report measurements of the Stark shift and Stark width of sodium spectral lines corresponding to n2S1/2-32P3/2,1/2 (n=5,6,7) and m2D5/2,3/2-32P3/2,1/2 (m=5,6) transitions. Measurements have been made on AC-driven high-pressure Na-Hg-Xe and Na-Cd-Xe discharges. Electron density has been determined from the measurements of the Stark shift of sodium 72S1/2-32P1/2,3/2 spectral line. The electron temperature and the density of neutral particles have been determined analyzing the shape of the measured sodium atomic lines, by comparison of the calculated and the observed line profiles. Electron density and temperature range from 6 ×1021 to 1 ×1022 m-3 and from 3800 to 4100 K, respectively. Dependence of measured Stark shifts and Stark widths on electron density and temperature have been investigated. The final results have been compared with available theoretical and experimental data.
Keywords
Stark shift and width; Na spectral lines; Na-Hg-Xe and Na-Cd-Xe discharges
Hrčak ID:
301991
URI
Publication date:
1.5.2005.
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