Relation between plasma plume charge and length in atmospheric pressure plasma

Abstract

We present atmospheric pressure plasma generated using a quartz tube, helium gas, and copper foil electrode by applying a radio frequency high voltage. The atmospheric pressure plasma in the form of a bullet is released as a plume into the atmosphere.To study the formation of the plasma plume, the dependences of the plasma plume charge and the plasma plume length on the gas flow rate are examined. In a quartz tube with inner diameter 1.5 mm, which has more helium than air in the cross section of the flow channel, the distributions of the length and charge on the gas flow rate show similar tendencies. Consequently, when more helium gas is present than air, the travel length of the plasma plume correlates with the plasma plume charge.

Measurement method of plasma current and density in atmospheric pressure plasma jet

“…The gas flow is controlled by a gas mass flow controller. The AC power supply (LHV‐13A, Logy Electric) can deliver a voltage from −6 to +9 kV and a main frequency of about 13 kHz, and the usual waveform is an asymmetric sine wave about the ground line .…”

Plasma-jet printing of colloidal thermoelectric Bi2Te3 nanoflakes for flexible energy harvesting

“…Fluid dynamic analysis. While fluid dynamic properties of atmospheric pressure plasma-jets [35][36][37][38][39] and buoyant helium jets 40,41 have been studied previously, the laminar and turbulent flow regions of the PJP have not been evaluated for determining ideal deposition parameters. It has been shown that the voltage and helium fluid velocity play a significant role in the length of the plasma plume.…”

Contrasting the characteristics of atmospheric pressure plasma jets operated with single and double dielectric material: physicochemical characteristics and application to bacterial killing

“…As a result, less charge is expected to accumulate with the double DBD configuration [23]. These accumulated charges could induce higher electric field resulting in the longer length of the plasma plume (figure 2) and could also increase the chemical reactivity of the plasma [24].…”