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  4. Optical emission spectroscopy diagnostics for plasma parameters investigation in a Duo-Plasmaline surface-wave sustained discharge
 
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2022
Journal Article
Title

Optical emission spectroscopy diagnostics for plasma parameters investigation in a Duo-Plasmaline surface-wave sustained discharge

Abstract
In this study, we used optical emission spectroscopy (OES) as a diagnostic tool in a Duo-Plasmaline surface-wave discharge. Argon plasma emission is recorded in order to calculate the electron density ne and the electron temperature Te in argon gas at a pressure range of 10-30 Pa. To describe argon emission, a corona model using different line ratios is compared to a more complete collisional-radiative model (CRM). It has been found that metastable states play an important role in the population model via electron impact excitation and radiation trapping and should be taken into account for the considered pressure range. The obtained parameters are in the range of 1.4 eV for the electron temperature and 5 × 1016 m-3 for the electron density.
Author(s)
Rachdi, Lazhar
Fraunhofer-Institut für Solare Energiesysteme ISE  
Sushkov, Vladimir
Fraunhofer-Institut für Solare Energiesysteme ISE  
Hofmann, Marc  
Fraunhofer-Institut für Solare Energiesysteme ISE  
Journal
Spectrochimica acta. B  
Project(s)
0324171B  
Funder
Deutsches Bundesministerium für Wirtschaft und Energie  
DOI
10.1016/j.sab.2022.106432
Language
English
Fraunhofer-Institut für Solare Energiesysteme ISE  
Keyword(s)
  • Argon

  • Collisional-radiative model

  • Corona model

  • Optical emission spectroscopy

  • Surface-wave plasma

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