Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/86
Title: On the use of the intensity ratio of He lines for electric field measurements in atmospheric pressure dielectric barrier discharge
Authors: Ivković, Saša 
Sretenović, Goran 
Obradović, Bratislav 
Cvetanović, Nikola
Kuraica, Milorad 
Keywords: dielectric barrier discharge;electric field measurement method;spectroscopy
Issue Date: 5-Feb-2014
Journal: Journal of Physics D: Applied Physics
Abstract: 
In this paper a new method is proposed and tested for electric field measurements in the cathode region of a low-temperature atmospheric pressure discharge in helium. The method uses intensity ratio of two helium singlet lines: He I 21P-31D at 667.8 nm and He I 2 1P-31S at 728.1 nm. The correlation between the line intensity and the electric field was firstly obtained via Stark polarization spectroscopy of He I 21P-41D 492.19 nm line and its forbidden counterpart in a dielectric barrier discharge (DBD) in helium. Collisional-radiative model for the involved atomic levels is utilized to confirm and obtain the functional dependence of the line ratio on the local electric filed strength. Finally, the new method was used for measurement and investigation of space-time evolution of electric field in the atmospheric pressure DBD. © 2014 IOP Publishing Ltd.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/86
ISSN: 0022-3727
DOI: 10.1088/0022-3727/47/5/055204
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