Dynamics behavior of homogeneous dielectric barrier discharge at atmospheric pressure

Abstract

An experimental study on the dynamics behavior of homogeneous dielectric barrier discharge (HDBD) at atmospheric pressure is described in this paper. Two kinds of discharge mode, glow and Townsend discharge modes, can be easily identified according to the differential conductivity of current-voltage relationship in the ascent stage of discharge current for the atmospheric HDBD. A (three-dimensional) 3D phase space made by discharge current, gas gap voltage, and charge density of dielectric-plate surface was utilized in the study. By projecting the discharge evolution trajectory in the 3D space, the 3D trajectory of multiple current peaks discharge in atmospheric helium shows a limited cycle with convolutions and undergoes a series of bifurcation process; however, the 3D trajectory of atmospheric N2 HDBD is a limited cycle without any convolution and bifurcation process. In addition, the first ionization coefficient of working gas plays a key role to determine the discharge mode of atmospheric HDBD, the transition of discharge mode and the dynamics stability of atmospheric HDBD.

Multiple current pulse behavior and its dynamics of atmospheric pressure plasma jet in a needle-to-ring configuration

“…However, in some cases, two or more pulses per half-cycle can be detected. This phenomenon, entitled 'multiple-current-pulse (MCP) discharge' [17] or 'pulsed regime diffuse discharge' [18], etc, has been reported and discussed in numerous previous publications [17,[19][20][21][22][23][24][25][26][27].…”

Systematic investigation of the effect of N2 admixture ratio on barrier discharge in helium

“…After discharge ignition, V gap decreases with increasing discharge current. This phenomenon is defined as the negative differential resistance [3,17] and is a characteristic of glow discharge [8]. Depending on the polarity and the initiation time of the discharge current waveform, four different discharge phases were identified (1st pos., 1st neg., 2nd pos., and off discharge).…”

“…For high-voltage pulses, if a discharge ignites well before V app reaches its maximum, secondary current pulses appear in the discharge current waveform [3,11,17,30]. Secondary current pulses in the discharge current waveform disappear when the applied voltage pulse reaches its peak value [38].…”

“…The presence of a layer of insulation in front of the electrode reduces avalanche multiplication, prevents arc formation, and thus stabilizes the discharge. APNP generated by DBD in a parallel electrode configuration using helium [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], nitrogen [18][19][20][21][22], and He-N 2 mixtures [23][24][25][26][27][28][29][30] as the working gas has been extensively studied. Discharge is stable for a limited set of input parameters [17].…”

“…APNP generated by DBD in a parallel electrode configuration using helium [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], nitrogen [18][19][20][21][22], and He-N 2 mixtures [23][24][25][26][27][28][29][30] as the working gas has been extensively studied. Discharge is stable for a limited set of input parameters [17]. The stability, periodicity, and reproducibility of the discharge behavior is attributed to the 'memory effect' [2,8,18], a process where energy deposited in the previous discharge phase becomes available in the subsequent discharge phase.…”