The study of micro-arc discharges during cathodic plasma electrolysis of refractory metals using the spectral line shape of Na I lines

The micro-arc discharges during cathodic plasma electrolysis of refractory metals (Zr, Ti, Ta) are studied by means of optical emission spectroscopy. The fitting procedure based on three mutually shifted profiles is developed to analyze the complex line shape of Na I 568.64 nm and 615.86 nm doublets...

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Bibliographic Details
Published in:Europhysics letters 2016-03, Vol.113 (6), p.68001-68001
Main Authors: Jovovi, Jovica, Stojadinovi, Stevan, Tadi, Nenad, Vasili, Rastko, Šišovi, Nikola M.
Format: Article
Language:English
Subjects:
32.70.Jz
82.45.Hk
94.20.Fg
Arc discharges
Atomic properties
Density
Doppler
Doppler effect
Electric arcs
Electrolysis
Emission analysis
Line shape
Line spectra
Optical emission spectroscopy
Refractory metals
Shape effects
Sodium
Zirconium
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Summary:The micro-arc discharges during cathodic plasma electrolysis of refractory metals (Zr, Ti, Ta) are studied by means of optical emission spectroscopy. The fitting procedure based on three mutually shifted profiles is developed to analyze the complex line shape of Na I 568.64 nm and 615.86 nm doublets. Each profile includes effects of instrumental, Doppler, Stark, van der Waals and resonance broadening. The results show the existence of three discharge zones with electron number density values , and while those of sodium ground-state atoms are , and .
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/113/68001