High Pressure Plasma Applications
4:00 pm – 5:30 pm,
Friday October 17 Session EF5 COEX, Room E2-E3
Measurement of CH and CH3 Radicals in Dielectric Barrier Discharge Using Photofragmentation Laser-Induced Fluorescence
5:15 pm – 5:30 pmPresenter: Jin Park (1) Korea Institute of Energy Technology (KENTECH), Institute for Hydrogen Energy, Korea. 2) King Abdullah University of Science and Technology (KAUST), CERP, Saudi Arabia.)
Authors: Aswath Mohanan (King Abdullah University of Science and Technology (KAUST), CERP.), Sebastian Nilsson (Combustion Physics, Department of Physics, Lund University, Sweden.), Jonas Ravelid (Combustion Physics, Department of Physics, Lund University, Sweden.), Andreas Ehn (Combustion Physics, Department of Physics, Lund University, Sweden.), Min Suk Cha (1) Korea Institute of Energy Technology (KENTECH), Institute for Hydrogen Energy, Korea. 2) King Abdullah University of Science and Technology (KAUST), CERP, Saudi Arabia.)
Collaboration: KAUST; LUND University
Non-thermal plasma technology is a novel approach for converting methane (CH4) to produce H2 or syngas for carbon neutrality. In the CH4 reforming process, it is essential to investigate the dynamics of methylidyne (CH) and methyl (CH3), the primary radicals produced in the CH4 cracking process, to achieve an deeper understanding of CH4 decomposition process. Here, we report the dynamic behavior of CH and CH3 radicals in a dielectric barrier discharge (DBD) with argon (Ar) and nitrogen (N2) dilutions. The Photofragmentation Planar Laser-Induced Fluorescence (PF-PLIF) imaging technique provided time evolution and spatial distribution of CH and CH3 radicals produced by electric discharge in DBD. The PF-PLIF results revealed that both radicals exhibited higher concentrations and more extensive spatial distributions in Ar than in N2. These results contribute to the development of efficient plasma technologies for sustainable energy applications.
Funding acknowledgement
King Abdullah University of Science and Technology (BAS/1/1384-01-01); Kungliga Fysiografiska Sällskapet i Lund; Vetenskapsrådet (2021-04506); HORIZON EUROPE European Research Council (852394, LAPLAS); H2020 Energy (884229, HYFLEXPOWER); Horizon 2020 Framework Programme (871124, LASERLAB-EUROPE).
PRESENTATIONS (5)
- 4:00 pm – 4:30 pmAdvanced Non-equilibrium Cold Plasma Technologies for Water Purification
Ram Prakash (presenter), Kiran Ahlawat, Ramavtar Jangra
- 4:30 pm – 4:45 pmMolecular excitation and dissociation in RF and ns-pulsed plasmas
Stephan Reuter (presenter), Jean-Philippe Comtois
- 4:45 pm – 5:00 pmNanosecond Pulsed Discharge Characteristics in an ArF Excimer Gas Mixture
JIAYI CHEN (presenter), Yangyang Fu
- 5:00 pm – 5:15 pmMechanism of Discharge Mode Transition in Air Plasma: the Inducing Effect of Humidity on Ozone to Nitrogen Oxide Mode by Kinetics Modeling
Teng Zhang (presenter), Yiheng Li, Yi Luo, Shuai Jiang, Jincong Wang, Chenxi Man, Xuekai Pei
- 5:15 pm – 5:30 pmMeasurement of CH and CH3 Radicals in Dielectric Barrier Discharge Using Photofragmentation Laser-Induced Fluorescence
Jin Park (presenter), Aswath Mohanan, Sebastian Nilsson, Jonas Ravelid, Andreas Ehn, Min Suk Cha