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Controlling the nitric and nitrous oxide production of an atmospheric pressure plasma jet-/title-

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Abstract Submitted for the GEC16 Meeting of The American Physical Society

Controlling the nitric and nitrous oxide production of an atmo- spheric pressure plasma jet CLAIRE DOUAT, Eindhoven University of Tech- nology, PMP, Eindhoven, The Netherlands / GREMI UMR7344CNRS,University of Orleans, France, SIMON HUBNER, Research Group Reactive Plasmas, Institute for Experimental Physics II, Ruhr-Universitt Bochum, 44780 Bochum, Germany, RICHARD ENGELN, Eindhoven University of Technology, PMP, Eindhoven, The Netherlands, JAN BENEDIKT, Research Group Reactive Plasmas, Institute for Experimental Physics II, Ruhr-Universitt Bochum, 44780 Bochum, Germany — At- mospheric pressure plasma jets are non-thermal plasmas and have the ability to create reactive species. These features make it a very attractive tool for biomedi- cal applications. In this work, we studied NO and N

2

O production, which are two species having biomedical properties. NO plays a role in the vascularization and in ulcer treatment, while N

2

O is used as anesthetic and analgesic gas. In this study, the plasma source is similar to the COST Reference Microplasma Jet (–APPJ). He- lium is used as feed gas with small admixtures of molecular nitrogen and oxygen of below 1%. The absolute densities of NO and N

2

O were measured in the effluent of an atmospheric pressure RF plasma jet by means of ex-situ quantum-cascade laser absorption spectroscopy via a multi-pass cell in Herriot configuration. We will show that the species’ production is dependent on several parameters such as power, flow and oxygen and nitrogen admixture. The NO and N

2

O densities are strongly depen- dent on the N

2

-O

2

ratio. Changing this ratio allows for choosing between a NO-rich or a N

2

O-rich regime [1]. [1] Douat et al, PSST, 25 (2016) 025027

Claire Douat Eindhoven University of Technology, PMP, Eindhoven, The Netherlands / GREMI UMR7344CNRS,University of Orleans, France

Date submitted: 31 May 2016 Electronic form version 1.4

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