kHz Plasma Pencil

Recently several investigators reported on various devices of generating cold plasma jets at atmospheric pressure. A pulsed source developed and reported, the pencil, is one them. This device capable a plume centimeters in length using DC high voltage source. In this study, kHz alternative current (18 kV-15 kHz) was applied to electrodes similar electrode system pencil instead direct pulse 2-3 cm long jet produced an air helium gas. new named as pencil. The by are room temperature. optical emission spectrum change with gas flow rate have been investigated. Unlike produces two different regimes filamentary diffusive it emits more radiation UV range. Preliminary results show that dynamics also from Keywords: pressure jet, kHz, Emission spectrum.