[17p-M_107-1~16] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-M_107-11] Measurement and Control of Nitrogen Trioxide Radicals
Driven by Air Plasma

〇(B)Yuuki Morishita¹, Shota Sasaki², Toshiro Kaneko² (1.Sch. of Eng., Tohoku Univ., 2.Grad. Sch. of Eng., Tohoku Univ.)

Keywords:

Atmospheric-Pressure Plasma,Nitrogen Trioxide,Cavity-Enhanced Absorption Spectroscopy

Air plasma can generate a wide variety of reactive species from air; however, the types of species that can be synthesized at high density or in a selective manner remain limited. In this study, we focus on the nitrate radical(NO₃), for which synthesis examples are scarce due to its extremely high reactivity. High-density NO₃ generation was achieved via thermal decomposition of N₂O₅, and sensitive quantitative measurements were performed using broadband cavity-enhanced absorption spectroscopy (BB-CEAS) combined with Fourier transform infrared spectroscopy (FT-IR) . As a result, it was clarified that the NO₃number density increases with an increasing density ratio of O₃ to NO₂ present as impurities in the gas phase.