Estimation of plasma parameters in a DC atmospheric pressure Argon plasma jet
Raghad S. Mohammed, Kadhim A. Aadim, Khalid A. Ahmed
Abstract
This work aims to analyze and discuss optical emission from the argon plasma jet induced by a high DC voltage source. Spectroscopic diagnostic method using the Boltzmann plot and the Stark broadening estimate the electron temperature and electron density in the atmospheric pressure plasma jet. The value of Te ranged from 0.303 to 0.313 eV as a function of the gas flow rate. Generally, The electron density can be determined quickly and cheaply by a Stark broadening of specific spectral lines spontaneously emitted through the plasma; from this method, electron density ranges from 0.90 to 2.25x1018 (cm−3). The plasma parameters such as (λD, ND, and ωp) related to electron temperature and electron density were also measured. The experimental investigation was performed in plasma argon flames. The plasmas were produced at a different flow rate.