[10p-N323-1~13] 8.1 Plasma production and diagnostics

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10p-N323-11] Frequency dependence of short-lived reactive oxygen species generated by an atmospheric-pressure plasma jet with the quartz-coated internal electrode

〇(M2)Natsumi Sato¹, Tatsuru Shirahuji¹, Jun-Seok Oh¹, Akimitsu Hatta² (1.Osaka Metropol. Univ., 2.Kochi Univ. Technol.)

Keywords:

reactive oxygen species,atmospheric-pressure plasma jet

Here, we quantitatively estimated the number of short-lived reactive oxygen species (ROS) using an atmospheric-pressure helium microplasma jet with a quartz-coated internal electrode. Methylene blue (MB) was used as an indicator, and the evaluation of the decomposition was conducted using absorption spectroscopy. We investigated the ROS production on the dependence of vertical irradiation distance and frequency dependence in the range of 1–60 kHz. In this presentation, we will report the electrical and optical discharge characteristics and the frequency and distance dependence of short-lived ROS in comparison with a conventional microplasma jet.