Investigation of Plasma Parameters Using OES and Spectra Simulations

The radiation from the arc plasma ignited between flat ends of copper electrodes in atmospheric pressure air at a direct current 3.5 A is analyzed to determine temperature and composition. Side-on spectra range (430 – 650) nm are recorded using CMOS camera connected spectrograph. spectral emission coefficient evaluated radiance, which provides radiator number density. excitation obtained by applying Boltzmann plot technique least two lines series radial positions midplane arc. Subsequently, composition determined. equation radiative transfer solved along sight considered experiment. intensity Cu I computed compared with experimental ones. properties assuming axial symmetry mapping values midplane.