Investigation on Characteristics of Atmospheric Pressure Helium Plasma Jet by Using different Pyrex Tubes Thickness

Abstract

Characteristics of atmospheric pressure plasma jet (APPJs)  is significant for use in different application such as medical, biomedical, agriculture, and industry. In this work, Pyrex tubes of different thicknesses (1, 0.5, 0.2, 0.1) mm were used in glow discharge to generate the helium plasma jet, effect of tube thickness on the properties of the generated plasma was investigated.  The temperature of the generated plasma was measured for all tubes of different thicknesses. The length of the plasma jet was calculated for a range of applied voltage (8-14) kV at a helium gas flow rate (4 SLM). Also,  the plasma temperature and the length of the flame were estimated for different gas flow rates (1-6) SLM where the applied voltage between the two electrodes of the system was 8 kV. The results show that the optimization characteristic obtained at 1mm thickness, the plasma temperature was confined between (24-26) ºC and the length of the plasma plume was 6cm These results were suitable to use in medical and biomedical applications.