The Mass Spectrometric Analysis of Negative Ions Extracted from Point-to-Plane Negative Corona Discharge in Ambient Air.

2008 ◽  
Author(s):  
J. D. Skalny ◽  
J. Orszagh ◽  
N. J. Mason ◽  
J. A. Rees ◽  
Y. Aranda-Gonzalvo ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Negative Ions ◽  
Ambient Air ◽  
Mass Spectrometric ◽  
Mass Spectrometric Analysis ◽  
Spectrometric Analysis ◽  
Negative Corona ◽  
Negative Corona Discharge

scholarly journals Modelling the Role of the Inner Electrode Radius on the Oxygen Negative Corona Discharge in Coaxial Electrode Geometry

2021 ◽  
pp. 4674-4686
Author(s):  
Muayad Abdullah Ahmed
Keyword(s):  
Corona Discharge ◽  
Negative Electrode ◽  
Negative Ions ◽  
Vital Role ◽  
Electrode Diameter ◽  
Negative Corona ◽  
Positive Ions ◽  
Direct Current Discharge ◽  
Negative Corona Discharge ◽  
Coaxial Electrode

The charge species plays a vital role in changing the field in direct current discharge (DC). This article introduces a numerical modeling in one dimension of the inner electrode diameter of oxygen-fed negative corona discharge in coaxial electrodes geometry. The properties of negative corona plasma in a concentric cylindrical electrodes (wire-cylinder) were simulated by COMSOL Multiphysics software. Various diameters of negative corona electrode, namely 0.01, 0.025, 0.05, 0.075, and 0.125 mm, were applied, ​​where the diameter of the outer cylindrical electrode was taken as 15 mm. The model was run at atmospheric pressure and the applied negative voltage was -10 KV. Moreover, oxygen gas was used to fill the inter-electrodes distance. Furthermore, the spatial distribution of electrons, positive ions, and negative ions as a function of the diameter of negative electrode of the negative corona discharge were investigated. The study also tested the effects of the electrode diameter of the negative corona discharge on ozone generation. The observed decrease in ozone density with the increase in negative electrode diameter was reasonable and consistent with other results provided by researchers in this field.

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