Optical Diagnostics of Zn foil using Non thermal plasma jets (NTPJ) via high voltage

Abstract

The plasma is applied on a zinc (Zn) plate using a Non thermal plasma jets (NTPJ) system that applies different high voltage at gas flow mixture (Ar/O) with a ratio of (10/1) constant at (40)l/min and time exposer 15 sec. Investigated were the optical emission spectroscopy (OES) characteristics of the Ar/O plasma on the Zn plate, when ignited at various high voltage (10, 14, and 18 KV). Using a method based on Stark broadening of the line density investigated, it was possible to determine the electron temperature in the range of (1.6-2.9) eV using the Boltzmann method, and the concentration of electrons was determined in the range of (12.3-9.9)x1017cm-3 depending on the amount absorbed by the various voltage. Other characteristics of the plasma's parameters have been determined using the (OES) for Ar/O by choosing the strong intensity spectral line's (frequency , Debye length , and Debye sphere ND) characteristics. The plasma flame's length was also measured using a ruler, it increased from 1 to 3 cm according to increasing voltage.