Optical Emission Spectroscopy as a Diagnostic Tool for Characterization of Atmospheric Plasma Jets

A suitable technique for localized surface treatment of solid materials is an atmospheric pressure plasma jet (APPJ). The properties the APPJ often depend on small details like concentration gaseous impurities what influences kinetics. simplest and most useful configuration presented, characterized by optical emission spectroscopy (OES), results are discussed in view various papers. Furthermore, additional recent papers characterization OES presented as well. Because operating at pressure, even water vapor traces may significantly alter type reactive species. sustained noble gases represents a source vacuum ultraviolet (VUV) radiation that absorbed treated material, thus causing bond scission. addition minute amounts causes significant suppression VUV formation radicals. These radicals such OH, O, N, NO, O3, alike interact chemically with its functionalization. Huge gradients these have been reported, so finish limited to area reached Particularly OH prevail spectra, when using very pure gas. They cause other spectral features. especially pronounced Ar plasmas. Their density decreases exponentially distance from orifice.