Investigation of Argon Plasma Jet Characteristics and the Influence of Gas Flow Rate on Plasma Emission Parameters using Bronze Alloy

Abstract

This study analyses the physical and optical properties of jet plasma at atmospheric pressure (APPJ) using optical emission spectroscopy (OES), focusing on the effect of argon gas flow rate. The results show that increasing the gas flow rate from 2 to 4 litres/minute results in an increase in the spectral emission intensity due to increased ionisation within the plasma. Using the Boltzmann method, it was noted that the electron temperature decreased from 0.609 to 0.526 electron volts, while the electron density increased as the gas flow rate was increased. This reflects an altered relationship between ionisation and energy loss. With higher gas flow, the plasma becomes more concentrated, but its temperature decreases. In this case, it becomes more manageable, ideal for advanced use.