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Publication
Multiple solutions in the theory of direct current glow discharges: effect of plasma chemistry and nonlocality, different plasma-producing gases, and 3D modelling
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Advisor(s)
Abstract(s)
The work is aimed at advancing the multiple steady-state solutions that have been found recently in
the theory of direct current (DC) glow discharges. It is shown that an account of detailed plasma
chemistry and non-locality of electron transport and kinetic coefficients results in an increase of the
number of multiple solutions but does not change their pattern. Multiple solutions are shown to
exist for discharges in argon and helium provided that discharge pressure is high enough. This
result indicates that self-organization in DC glow microdischarges can be observed not only in
xenon, which has been the case until recently, but also in other plasma-producing gases; a
conclusion that has been confirmed by recent experiments. Existence of secondary bifurcations can
explain why patterns of spots grouped in concentric rings, observed in the experiment, possess in
many cases higher number of spots in outer rings than in inner ones.
Description
Keywords
Theory of direct current glow discharges Direct current glow discharges Plasma chemistry and nonlocality Different plasmaproducing gases . Faculdade de Ciências Exatas e da Engenharia
Citation
Almeida, P. G. C., & Benilov, M. S. (2013). Multiple solutions in the theory of direct current glow discharges: effect of plasma chemistry and nonlocality, different plasma-producing gases, and 3D modelling. Physics of Plasmas, 20(10), 101613. DOI: 10.1063/1.4826184
Publisher
American Institute of Physics