NUMERICAL SIMULATION OF STREAMER PROPAGATION IN OXYGEN

2008 ◽  
Vol 22 (03) ◽  
pp. 293-307 ◽  
Author(s):  
A. SETTAOUTI ◽  
L. SETTAOUTI

Glow discharges are being used in many fields of application. For the improvement of performance in these applications, it is necessary to understand discharge dynamics experimentally and numerically. In this paper, a Monte Carlo simulation is carried out in oxygen ( O 2) in uniform electric fields. The electron motion and avalanche growth are simulated by tracing individual paths, and the technique also accounts for the effect of the rapid spatial and temporal space charge variations by solving the Poisson equation. The streamer propagation, electron, positive and negative-ion distribution, and space charge fields are studied in detail as time increases.

2007 ◽  
Vol 18 (06) ◽  
pp. 957-971 ◽  
Author(s):  
A. SETTAOUTI ◽  
L. SETTAOUTI

There has been considerable interest in non-thermal discharges over the past decade due to the increased number of industrial applications. The properties of discharges in electronegative gases are most frequently used for technological applications. For the improvement of performance in these applications, it is necessary to understand discharge dynamics experimentally and numerically. In this paper, a Monte Carlo simulation is carried out in sulfur hexafluoride (SF6) in uniform electric fields. The streamer propagation, electron, positive and negative ion distributions and space charge fields are studied in detail as time increases.


2016 ◽  
Vol 24 (4) ◽  
Author(s):  
P. Moszczyński ◽  
A. Walczak ◽  
P. Marciniak

AbstractIn cyclic articles previously published we described and analysed self-organized light fibres inside a liquid crystalline (LC) cell contained photosensitive polymer (PP) layer. Such asymmetric LC cell we call a hybrid LC cell. Light fibre arises along a laser beam path directed in plane of an LC cell. It means that a laser beam is parallel to photosensitive layer. We observed the asymmetric LC cell response on an external driving field polarization. Observation has been done for an AC field first. It is the reason we decided to carry out a detailed research for a DC driving field to obtain an LC cell response step by step. The properly prepared LC cell has been built with an isolating layer and garbage ions deletion. We proved by means of a physical model, as well as a numerical simulation that LC asymmetric response strongly depends on junction barriers between PP and LC layers. New parametric model for a junction barrier on PP/LC boundary has been proposed. Such model is very useful because of lack of proper conductivity and charge carriers of band structure data on LC material.


2011 ◽  
Vol 176 (17) ◽  
pp. 1368-1372 ◽  
Author(s):  
Abel García-Barrientos ◽  
Vassil Palankovski

2016 ◽  
Vol 87 (2) ◽  
pp. 02B917 ◽  
Author(s):  
E. Sartori ◽  
T. J. Maceina ◽  
P. Veltri ◽  
M. Cavenago ◽  
G. Serianni

2000 ◽  
Vol 61 (20) ◽  
pp. 13528-13539 ◽  
Author(s):  
Stéphane Holé ◽  
Thierry Ditchi ◽  
Jacques Lewiner

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