الفهرس 
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Abstract
In this work, a one dimensional model of Dielectric Barrier Plasma
Discharge (DBD) at atmospheric pressure (APP) with helium working
gas. There has been a considerable interest in non-thermal atmospheric
pressure discharges over the past decade due to increased number of
industrial applications.
Although non-thermal atmospheric pressure discharges have been
intensively studied for the past century the clear physical picture of these
discharges is far from being complete.
Spontaneous transition of non-thermal atmospheric pressure
discharges to thermal discharge and discharge filamentation are among
least understood plasma phenomena. The discharge stability and reliable
control of plasma parameters are highly desirable for numerous
applications. This study focuses on stability of atmospheric pressure glow
discharges with respect to filamentation and arcing.
The model solves the continuity equations for charged species and
the electron energy balance equation, coupled with Poisson’s equation, by
the finite element method. DBD plasma simulation results are given in
terms of temporal variations of plasma electric characteristics such gas
voltage and discharge current. The discharge behavior is studied as a
function of external parameters such as the width of the discharge space
and the nature of the dielectric through the value of its dielectric constant.
Finally, an interactive way for the development of an Internet
laboratory is introduced. Development of a virtual model of the laboratory
is reported. The difference between an Internet Lab and a Virtual Lab is