Investigation of the effects of pulse repetitionfrequency in a mixed electric field on a SDBD-likeplasma jet

In this paper, the design, performance and characterization of a low temperature argon plasma jet with a surfacedielectric barrier discharge (sdbd)-like structure are presented. based on this structure, the argon plasmajet is generated in a sdbd-like structure with a mixed electric field. sdbd-like structure, refers to the plasmajet generated by the surface dielectric barrier discharge. the effects of high frequency electric pulse as themain igniter for plasma jet generation and low frequency sinusoidal electric field in order to modify the dynamicbehavior of plasma jet are investigated in this paper. the effect of these variations on the plasma jet along withthe decrease in pulse repetition frequency were recorded by schlieren imaging method. this study revealed theimportant role of decreasing the pulse repetition frequency in the mixed electric field in the sdbd-like plasma jetstructure. increasing the cross-sectional area of the plasma colliding with the target surface is the most importantadvantage of this structure for the generation of plasma jets. also, the trend of decreasing plasma columncontinuity with increasing pulse repetition frequency is another result of this study. under these conditions, thediameter of the cross section of the plasma jet increases to 9 mm without increasing the consumption of moreelectrical power and with equal jet length. finally, the surface hydrophilicity was measured after treatment byplasma jet and the operation resulted in a super-hydrophilic surface.