[20a-E306-1~12] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

[20a-E306-3] High Temporal Resolution Measurement of OH Radical Decay in High-speed Liquid Flow Passing through Atmospheric-pressure Plasma

〇Shota Sasaki¹, Wencheng Luo¹, Ryosuke Honda¹, Keisuke Takashima¹, Toshiro Kaneko¹ (1.Grad. Sch. of Eng., Tohoku Univ.)

Keywords:Atmospheric-pressure Plasma, OH radical

Plasmas in contact with liquids have been extensively investigated for many applications ranging from environmental remediation to material science and medicine. Many reports showed the significant contribution of short-lived reactive species in the liquid phase, while the species are too short-lived to be measured. In this study, we developed a novel method to measure concentrations of reactive species with much higher temporal resolution (~ 0.1 ms) by introducing high-speed liquid flow (~ 10 m/s) into atmospheric-pressure plasma. In the presentation, the temporal changes in OH radical concentration will be reported.