Experimental observation of multiple double Layers structures in Plasma-part II: nonconcentric multiple double Layers

Ivan, L. M.; Amarandei, George; Aflori, Magdalena; Mihai-Plugaru, M.; Gaman, Cezar; Dimitriu, Dan Gheorghe; Sanduloviciu, M.

doi:10.1109/tps.2005.845370

Cited by 13 publications

(14 citation statements)

References 9 publications

(5 reference statements)

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“…As a result, the concentration peak of the activator will split up and shift towards the regions that have a higher concentration of substrate. This scenario explains the formation of several balls of fire on the anode [22,23] as well as their mutual disposition on the anode, in the form of regulate polygons [24]. The stability of eqs.…”

Section: Circuit Theory For a Plasma Diode With A Ball Of Fire Atmentioning

confidence: 93%

Turing structures in dc gas discharges

Popescu

2006

Europhys. Lett.

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Self-organized spatial plasma structures exhibit many similarities with Turing structures obtained in biology and chemistry. Using an analytical mesoscopic approach it is shown that plasma balls of fire belong to the same class of Turing structures like the Brusselator. It is also mathematically proved that the existence of these self-organized plasma structures is related with a negative differential resistance. There are also established the mathematical conditions which the negative differential resistance must satisfy for obtaining a stationary ball of fire at the anode of a plasma diode.

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Section: Circuit Theory For a Plasma Diode With A Ball Of Fire Atmentioning

confidence: 93%

Turing structures in dc gas discharges

Popescu

2006

Europhys. Lett.

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“…When the electron sheath between the fireball and electrode reaches the ionization potential of the neutral gas, a second fireball would be predicted to form by the same mechanism as described in section 6.2. Indeed, such multiple fireball formation has been observed [261,262,263,264,265,266,267,268,269,270,271,272,273]. These usually take the form of concentric spheres or hemispheres, as shown in figure 35 [261,263,264].…”

Section: Multiple Fireballsmentioning

confidence: 98%

“…Multiple fireballs are not always concentric. Side-by-side fireballs have been observed on large electrodes [266], and even a series of several fireballs have been observed on asymmetric electrodes [265]. Electrodes with two conducting sides will sometimes have a fireball on each side.…”

Section: Multiple Fireballsmentioning

confidence: 99%

Interaction of biased electrodes and plasmas: sheaths, double layers, and fireballs

Baalrud

Scheiner

Yee

et al. 2020

Plasma Sources Sci. Technol.

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Biased electrodes are common components of plasma sources and diagnostics. The plasma-electrode interaction is mediated by an intervening sheath structure that influences properties of the electrons and ions contacting the electrode surface, as well as how the electrode influences properties of the bulk plasma. A rich variety of sheath structures have been observed, including ion sheaths, electron sheaths, double sheaths, double layers, anode glow, and fireballs. These represent complex self-organized responses of the plasma that depend not only on the local influence of the electrode, but also on the global properties of the plasma and the other boundaries that it is in contact with. This review summarizes recent advances in understanding the conditions under which each type of sheath forms, what the basic stability criteria and steady-state properties of each are, and the ways in which each can influence plasma-boundary interactions and bulk plasma properties. These results may be of interest to a number of application areas where biased electrodes are used, including diagnostics, plasma modification of materials, plasma sources, electric propulsion, and the interaction of plasmas with objects in space.

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“…For more than a century now beautiful patterns on anodes of DC glow discharges have been observed [1][2][3][4][5][6][7][8]. The patterns are of significant theoretical interest in themselves, and also because of their connection with various types of double layer structures and the socalled plasma balls, which have been studied at low gas pressures [9][10][11][12][13][14][15][16]. The patterns are interesting also from the point of view of their technological applications.…”

Section: Introductionmentioning

confidence: 99%

Self-consistent modeling of self-organized patterns of spots on anodes of DC glow discharges

Bieniek

Almeida

Benilov

2018

Plasma Sources Sci. Technol.

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Self-organized patterns of spots on a flat metallic anode in a cylindrical glow discharge tube are simulated self-consistently. A standard model of glow discharges is used, comprising conservation and transport equations for a single species of ion and electrons, written with the use of the drift-diffusion and local-field approximations, and the Poisson equation. Only processes in the near-anode region are considered and the computation domain is the region between the anode and the discharge column. Multiple solutions, existing in the same range of discharge current and describing modes with and without anode spots, are computed for the first time. A reversal of the local anode current density in the middle of each of the spots was found, i.e. mini-cathodes are formed inside the spots or, as one could say, anode spots operate as a unipolar glow discharge. The solutions do not fit into the conventional pattern of self-organization in bistable nonlinear dissipative systems; e.g. the modes are not joined by bifurcations.

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Experimental observation of multiple double Layers structures in Plasma-part II: nonconcentric multiple double Layers

Cited by 13 publications

References 9 publications

Turing structures in dc gas discharges

Turing structures in dc gas discharges

Interaction of biased electrodes and plasmas: sheaths, double layers, and fireballs

Self-consistent modeling of self-organized patterns of spots on anodes of DC glow discharges

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