Effect of composition of electrolyte cathode on emission intensity of metal atoms in the discharge plasma at atmospheric pressure

8th All-Russian Conference on Low Temperature Plasma in the Processes of Functional Coating Preparation

Sirotkin, N.A.^1 ; Titov, V.A.^1

G.A. Krestov Institute of Solution Chemistry RAS, Ivanovo

153045, Russia^1

关键词: Electric field strength;    Electrolyte cathode;    Electron energy distribution functions;    Emission intensity;    NaCl concentration;    Numerical solution;    Plasma emission spectroscopy;    Relative intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/789/1/012054/pdf
DOI  :  10.1088/1742-6596/789/1/012054

来源: IOP

【 摘 要 】

The emission spectra and the plasma parameters of discharges were investigated. Water solutions of copper and nickel chlorides with additions of sodium chloride were used as electrolyte cathodes. The change of the relative intensities of the emission lines of the elements (Cu and Ni) with increasing NaCl concentrations in the solution is shown. The gas temperature and the reduced electric field strength in the plasma were founded. The electron energy distribution function and the excitation rate coefficients for emitting states of copper and nickel atoms by the numerical solution of the Boltzmann equation were obtained. It was shown that in plasma emission spectroscopy measuring it is necessaryto considerthe correlation between rates of excitation and composition of the sample solution in order to determine the concentration of metal ions in the water solutions.