Abstract

XAUBET, M; GIULIANI, L; GRONDONA, D  and  MINOTTI, F. Different regimes of a plasma jet discharge in air and in argon. An. AFA [online]. 2015, vol.26, n.3, pp.154-158. ISSN 0327-358X.

Non-thermal plasmas generated at atmospheric pressure are of great interest for biomedical applications related to sterilization and microbial decontamination. These plasmas produce reactive species such as O, N₂* and OH radical and atomic O, associated with processes of inactivation of microorganisms and removal of organic materials. In this work we study an electrical discharge capable of generating a plasma plume close to ambient temperature. The discharge is produced between two conducting disks separated by an insulating disk, with a 1 mm central hole through which the operating gas flows. Characteristic voltage-current curves were measured using either air or argon and variable insulator thicknesses between 1 and 10 mm. Also, the discharge emission spectrum was measured.

Keywords : Electrical discharges; Plasma jet; Plasma medicine.

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