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Microsecond pulse gas–liquid discharges in atmospheric nitrogen and oxygen: Discharge mode, stability, and plasma characteristics
Author(s) -
Wang Sen,
Liu Yawei,
Zhou Renwu,
Liu Feng,
Fang Zhi,
Ostrikov Kostya Ken,
Cullen Patrick J.
Publication year - 2021
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.202000135
Subject(s) - plasma , oxygen , nitrogen , microsecond , chemistry , electric discharge in gases , analytical chemistry (journal) , atomic physics , materials science , environmental chemistry , optics , physics , electrical engineering , organic chemistry , quantum mechanics , engineering
A plasma's working gas is a significant factor affecting their discharge characteristics and the induced chemistries during plasma–water interactions. However, the effects on the discharge mode and discharge stability have not been fully investigated. This study focuses on the discharge mode transition and stability with nitrogen and oxygen gases. Compared with the oxygen discharge, the nitrogen discharge remained stable over a larger voltage range and long duration time. A diffuse mode discharge had better stability and lower plasma activity for both nitrogen and oxygen gases, whereas a transient spark mode in nitrogen and filament mode in oxygen had lower stability but a higher plasma activity. This study improves the understanding of the physicochemical processes of plasma–water interactions.