Plasma spots in a gas discharge system: birth, scattering and formation of molecules

Self-organized pattern formation of an atmospheric pressure plasma jet in a dielectric barrier discharge configuration

“…Each of the channels has a width of a few millimeters, clearly contrasting the typical submillimetersized filaments observed in the previous studies. 1, [8][9][10][11][12][13][14][15] The distance between two adjacent plasma channels is about 9 mm in Fig. 2͑b͒.…”

“…1 Pattern formations have been observed in many nonlinear and nonequilibrium systems. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Dielectric barrier discharge ͑DBD͒ is a typical nonlinear and nonequilibrium system, in which different discharge modes, referred to as filamentary, self-organized patterned, or diffuse discharges, can be obtained at atmospheric pressure by controlling the experimental conditions. The filamentary mode is characterized by a large number of short-lived microdischarge channels with a nanosecond time scale.…”

“…6,7 In the past two decades, the understanding of pattern formation in DBD has been broadened with experimental observations of a large variety of self-organized patterns including hexagon, strip, spiral, and concentric ring patterns. 1, [8][9][10][11][12][13][14][15] These are formed between two parallel electrodes immersed in a static atmospheric gas and their basic constituent elements tend to have a submillimeter diameter. Studies of pattern formations are important for DBDs, not only because of their intriguing similarities with those in other scientific disciplines but also because of their potential to uncover a previously uncharted operating regime that offers active plasma chemistry and stability simultaneously.…”

Period doubling cascade in glow discharges: Local versus global differential conductivity

“…An interesting series of experiments has been performed on such glow discharges with wide lateral extension [2][3][4][5][6][7][8][9][10][11][12][13] where the formed patterns were explored very systematically. The observed structures (stripes, hexagons, spirals, spots, homogeneous oscillations, etc.)…”

“…In comparison to the other systems, the glow discharge system has the advantage of particular convenient experimental handling and time scales [14]. In addition to structures familiar from other physical systems, glow discharges continue to exhibit new structures that might be specific for this system [2][3][4][5][6][7][8][9][10][11][12][13]. We will focus on the experiment in Ref.…”