TY - JOUR
T1 - Global model of low-frequency-driven cold atmospheric He + air plasmas
AU - Sun, Bowen
AU - Zhang, Hao
AU - Niu, Zhe
AU - Lu, Baofeng
AU - Zhang, Mingyan
AU - He, Yujie
AU - Liu, Dingxin
AU - Wang, Xiaohua
N1 - Publisher Copyright:
© 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
PY - 2025/3/10
Y1 - 2025/3/10
N2 - He + air mixture is a commonly used background gas for cold atmospheric-pressure plasmas (CAPs) because of its good discharge stability and chemical reactivity. However, the internal physical and chemical characteristics, especially the mechanism of the reactive species in low-frequency (LF)-driven He + air CAPs, are not fully understood. Hence, in this study, a global model incorporating 59 species and 866 volume reactions is developed to investigate the species densities and chemical pathways in 50 kHz-driven He + air CAPs with air contents ranging from 200 to 5000 ppm. In the entire air content range, O4+ is the most abundant cation, and NO3− is the most abundant anion. HNO2 is the dominant reactive nitrogen species (RNS), and the dominant reactive oxygen species (ROS) changes from H2O2 to O3 when the air concentration increases above 1000 ppm. Moreover, since He + air CAPs are typically driven by low frequency to radio frequency (RF) power sources, in this work, the species densities in LF (f = 50 kHz)- and RF (f = 13.56 MHz)-driven He + air plasmas are compared.
AB - He + air mixture is a commonly used background gas for cold atmospheric-pressure plasmas (CAPs) because of its good discharge stability and chemical reactivity. However, the internal physical and chemical characteristics, especially the mechanism of the reactive species in low-frequency (LF)-driven He + air CAPs, are not fully understood. Hence, in this study, a global model incorporating 59 species and 866 volume reactions is developed to investigate the species densities and chemical pathways in 50 kHz-driven He + air CAPs with air contents ranging from 200 to 5000 ppm. In the entire air content range, O4+ is the most abundant cation, and NO3− is the most abundant anion. HNO2 is the dominant reactive nitrogen species (RNS), and the dominant reactive oxygen species (ROS) changes from H2O2 to O3 when the air concentration increases above 1000 ppm. Moreover, since He + air CAPs are typically driven by low frequency to radio frequency (RF) power sources, in this work, the species densities in LF (f = 50 kHz)- and RF (f = 13.56 MHz)-driven He + air plasmas are compared.
KW - cold atmospheric plasmas
KW - global model
KW - low-frequency
UR - https://www.scopus.com/pages/publications/85214448893
U2 - 10.1088/1361-6463/ad9f7b
DO - 10.1088/1361-6463/ad9f7b
M3 - 文章
AN - SCOPUS:85214448893
SN - 0022-3727
VL - 58
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 10
M1 - 105206
ER -