Influence of external parameters on nonlinear behaviors in a helium dielectric-barrier discharge excited by a modulated voltage

Abstract

Using a one-dimensional fluid model, period multiplication and chaos behaviors in the time domain are numerically investigated in atmospheric pressure helium dielectric-barrier discharge excited by a modulated sinusoidal voltage. The results indicate that with the increasing duty ratio of the modulated voltage, various nonlinear behaviors are obtained, including asymmetric single-period, period-three, period-seven, chaotic, and symmetric single-period states. More details are revealed that period-four, period-nine, and period-thirteen states can also be observed between period-three and period-seven states. For the period-three state, there are six current pulses in each current period, which have different amplitudes with each other. Besides the duty ratio, the sinusoidal frequency of the modulated voltage is varied, which results in similar nonlinear behaviors. Additionally, under a duty ratio of 80%, it maintains a stable period-two state with the increasing voltage amplitude or the decreasing gap width. During this process, the pulse number and duration time increase per half voltage cycle. Finally, spatial distributions of the electric field, electron density, and ion density are investigated for the novel period-three state, which is qualitatively explained through analyzing the influence of the averaged density of electrons and metastable states just before the discharge moments.

Modeling study on temporal nonlinear behaviors in CO2 dielectric barrier discharges under Martian pressure

“…By decreasing the power-off duration to 13 μs in Figure 2g, the discharge presents a clear P3 state, which is demonstrated in Figure 2h, where three different loops in phase space can be shown. According to the Li-York theory, the P3 state means the existence of chaos [34,60] . By further decreasing the power-off duration, the new nonlinear behaviors are observed in Figure 3, which gives temporal evolutions of discharge current density with the power-off durations of 10, 7, and 5 μs together with the corresponding trajectories in phase space.…”

“…Zhang et al [33] proposed that the transition between symmetric discharge and asymmetric discharge may be caused by the electron backflow. In addition, some reports have discussed the nonlinear phenomenons in DBD driven by modulated sinusoidal voltage [34] , pulsed voltage [35] , and triangle-wave voltage [36] .…”

Characteristics of Radio Frequency Dielectric Barrier Discharge Using Argon Doped with Nitrogen at Atmospheric Pressure

“…The previous studies show that, compared with bare electrodes, dielectric barrier discharge (DBD) allows plasma to retain its large volume without constriction [ 15 , 16 , 20 ]. Among the various power sources used in atmospheric DBD discharge [ 9 , 21 , 22 , 23 , 24 ], RF power shows unique advantages in low breakdown voltage, stability and power density improvement [ 9 , 20 , 25 , 26 ]. On the other hand, filamentous discharge as a common discharge mode of DBD has also been studied a lot [ 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Spatiotemporal Characteristics of Radio Frequency Dielectric Barrier Glow Discharge at Atmospheric Pressure

“…On the other hand, radio frequency DBD is now a popular source used to achieve a stable and large-gap atmospheric pressure glow discharge with lower breakdown voltage and avoid emergence of arc discharge and filamentary discharge, compared with DC glow discharge and low and medium frequency DBD at atmospheric pressure [6][7][8][9][10][11]. Therefore, a lot of study has been done on the discharge mechanism, simulation, and speckle pattern of radio-frequency dielectric barrier discharge (rf-DBD) at atmospheric pressure [12][13][14][15][16][17][18][19][20][21][22][23].…”