Fig. 1. Temple evolution of current densities in DBDs with a modulation frequency of 6.25 MHz, voltage amplitude of 800 V and duty cycle of 60%.

Fig. 2. Temporal evolution of current densities at a given modulation frequency of 6.25 MHz and voltage amplitude of 800 V for various duty cycles from 10% to 100%.

Fig. 3. Peak values of current densities as a function of duty cycle at a given modulation frequency and voltage amplitude.

Fig. 4. Spatial distribution of electric fields at the moment when the positive current density reaches the top value for various duty cycles.

Fig. 5. Spatial profiles of electron density (solid line) and ion density (dash line) at the instant when the positive current density reaches the peak value for various duty cycles.

Fig. 6. Spatial distribution of the electric fields at the moment when the negative current density reaches the top value for various duty cycles.

Fig. 7. Temporal evolution of current densities at a given voltage amplitude of 600 V and duty cycle of 60% for various modulation frequencies from 6.25 MHz to 50 MHz

Fig. 8. Peak values of current densities as a function of modulation frequency at a given applied voltage of 800 V and duty cycle of 60%.

Fig. 9. Temporal evolutions of current densities at a given modulation frequency of 6.25 MHz and voltage amplitude of 800 V for various voltage modulated rates from 0 to 1.0.

Fig. 10. Peak values of current densities as a function of voltage modulated rates at a given modulate frequency of 6.25 MHz and voltage amplitude of 800 V.