Journal
PLASMA PROCESSES AND POLYMERS
Volume 3, Issue 8, Pages 587-596Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200600051
Keywords
atmospheric pressure glow discharge (APGD); atomic oxygen production; nonthermal plasma; plasma jet; reactive species
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This article reports on the performance of a miniature APGD-t conceived for the production of reactive species participating in bio-applications. Two operating parameters were varied the plasma-forming gas flow rate (0.5-1.5 slm e) and the flow rate of O-2 (0-50 seem), which was injected downstream from the plasma-forming zone, and which was used as a source of reactive species. The production of reactive species (O) was optimized, and the air entrainment in the plasma jet was minimized for a He gas flow rate of 1-1.5 slm and an O-2/He volumetric ratio of 0.3 vol.-%. A survey of the possible reaction pathways in the afterglow plasma jet suggests that the reactive species present in the plasma afterglow, and possibly reaching a remote substrate are metastable He(2(3)S), ground state O, OH, O-2 (a(1)Delta g), O-2 (b(1)Sigma g(+)), N, N-2, N-2 and O-3.
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