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Modeling Study on the Generation of Reactive Oxygen Species in Atmospheric Radio‐Frequency Helium–Oxygen Discharges
Author(s) -
He Jin,
Zhang Yuantao T
Publication year - 2012
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201200067
Subject(s) - oxygen , helium , reactive oxygen species , radio frequency , plasma , power density , atomic oxygen , analytical chemistry (journal) , atomic physics , chemistry , chemical physics , materials science , power (physics) , environmental chemistry , physics , thermodynamics , electrical engineering , biochemistry , organic chemistry , quantum mechanics , engineering
Atmospheric radio‐frequency (rf) plasmas have attracted an increasing amount of attention due to its unparalleled capability for production of chemically reactive oxygen species (ROS). In this paper, we explore a one‐dimensional fluid model, incorporating 17 species and 65 key reactions, to investigate the generation mechanism of ROS in atmospheric He/O 2 rf discharges. From the computational data the atomic oxygen density is almost linearly dependent on the power density and its largest value was observed at the oxygen admixture of 0.6% while altering the oxygen admixture at a constant power density, and an optimal oxygen admixture level of 0.3% is also found to produce the largest density of single delta oxygen (SDO) at a given power density.The dominant production and destruction reactions of ROS are also discussed based on the simulation results.