Fig. 3From: Methods of gas purification and effect on the ion composition in an RF atmospheric pressure plasma jet investigated by mass spectrometryEffect of Type of feed gas connection ((a) polyamide tube; (b) stainless steel 5 min After ignition; (c) stainless steel 15 min after ignition) on mass spectra obtained from the analysis of the μ-APPJ operated in a controlled atmosphere, no admixture of reactive gases, 2 mm distance to orificeBack to article page