[9a-E308-1~11] 8.1 Plasma production and diagnostics

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-E308-1] Frequency dependence of reactive species production in an atmospheric-pressure microplasma jet

〇Keita Kunioka¹, Tatsuru Shirafuji¹, Jun-Seok Oh¹, Akimitsu Hatta² (1.Osaka Metropol. Univ., 2.Kochi Univ. of Technol.)

Keywords:

atmospheric-pressure plasma,short-lived reactive species,long-lived reactive species

In this study, the frequency of an atmospheric-pressure microplasma jet was varied. The fundamental discharge characteristics, including voltage-current characteristics and optical emission spectroscopy, were investigated. Furthermore, the short-lived reactive species was quantitatively evaluated using UV-vis with methylene blue decomposition, while the long-lived reactive species in plasma-activated water was evaluated. In addition, the input power was calculated from the voltage and discharge current, and the efficiency of the production of reactive species was estimated. As a result, a frequency dependence was observed in reactive species generation, and both the production and efficiency showed an optimized frequency in the intermediate-frequency range.