Enhancement of radio-frequency atmospheric glow discharge by pulsed plasma jet

This paper presents experimental study of the electrical and optical characteristics of the pulsed plasma jet enhanced radio-frequency(RF) atmospheric glow discharge. The combined electrode system was employed in the experiments by introducing pulse power electrode in the front of the radio frequency power electrode, and the plasma jet was injected into the RF discharge region in the form of plasma bullets. The waveforms of voltage and current,the minimum maintaining voltage of RF discharge, the spatio-temporal evolution of discharge spatial profile are studied. It is found that the discharge intensity of the radio frequency discharge is enhanced spatio-temporally by the introduction of plasma species with plasma bullet,and the minimum sustaining voltage of the RF discharge is reduced from 0.93 kV to 0.43 kV.