Modeling nonthermal plasmas generated in glow discharges*
نویسندگان
چکیده
Over the past decade, tremendous progress has been made in the modeling of nonthermal plasmas, and models have now reached the point that they are being used to help guide the experimental optimization of plasma based devices. In this communication we provide an overview of models used to describe nonthermal plasma generated in glow discharges. We show results from two applications, plasma display panels and glow discharge mass spectrometry for materials analysis.
منابع مشابه
A hierarchy of diffusion models for partially ionized plasmas
Partially ionized plasmas corresponding to different ionization degrees are derived and connected one with each other by the diffusion approximation methodology. These plasmas are the following electrical discharges: a thermal arc discharge, glow discharges in local thermodynamic equilibrium -LTEand in non-LTE, and a non-LTE glow discharge interacting with an electron beam (or flow).
متن کاملElectron energy distribution function and plasma parameters across magnetic filters
Related Articles Landau damping of a driven plasma wave from laser pulses Phys. Plasmas 19, 012112 (2012) Modeling of asymmetric pulsed phenomena in dielectric-barrier atmospheric-pressure glow discharges Phys. Plasmas 19, 012308 (2012) Effect of guide field on lower-hybrid drift instabilities in current sheet containing energetic particles Phys. Plasmas 19, 012110 (2012) Comparison of entropy ...
متن کاملCold Plasma Chemistry and Diagnostics
This paper gives an overview of the main chemical processes which take place in cold plasmas generated in glow discharges, both in the gas phase and at the surfaces in contact with the plasma. Illustrative examples are provided where the relevance of different processes is evinced. Most common plasma characterization techniques and their recent improvements are also presented briefly.
متن کاملLecture 22 : Atmospheric Plasma
Atmospheric-pressure plasmas are used in a variety of materials processes. Traditional sources include transferred arcs, plasma torches, corona discharges, and dielectric barrier discharges. In arcs and torches, the electron and neutral temperatures exceed 3000 C and the densities of charge species range from 10 –10 cm . Due to the high gas temperature, these plasmas are used primarily in metal...
متن کاملScaled-up Nonequilibrium Air Plasmas
The volume scalability of nonequilibrium plasmas produced by electrical discharges in atmospheric pressure air has been investigated. A variety of direct current (DC) and pulsed glow discharges obtained in either slow flow of ambient or fast flow of preheated (~2000 K) air at atmospheric pressure is presented. Single DC and repetitively pulsed discharges represent the first approach. Stable dis...
متن کامل