Effects of photoionization on similarity properties of streamers at various pressures in air

N. Liu, V. P. Pasko

    Research output: Contribution to journalArticle

    87 Citations (Scopus)

    Abstract

    Modelling studies are presented of positive streamers developing at various pressures in air in a point-to-plane discharge geometry. The modelling results emphasize that the quenching of the singlet excited states of molecular nitrogen emitting photoionizing radiation is responsible for non-similar behaviour of streamers at pressures higher than approximately 30 Torr. Our modelling results are consistent with recent experimental work showing that streamers have more and thinner channels and branch more frequently at higher (i.e. near atmospheric) pressures than at lower pressures. The results also demonstrate the importance of accounting for effects associated with electrode geometry for the interpretation of experimental studies on similarity properties of streamers at various pressures.

    Original languageEnglish (US)
    Pages (from-to)327-334
    Number of pages8
    JournalJournal of Physics D: Applied Physics
    Volume39
    Issue number2
    DOIs
    StatePublished - Jan 21 2006

    Fingerprint

    Photoionization
    photoionization
    air
    geometry
    Air
    atmospheric pressure
    low pressure
    quenching
    nitrogen
    electrodes
    Geometry
    radiation
    Excited states
    Discharge (fluid mechanics)
    Atmospheric pressure
    excitation
    Quenching
    Nitrogen
    Radiation
    Electrodes

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Acoustics and Ultrasonics
    • Surfaces, Coatings and Films

    Cite this

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    title = "Effects of photoionization on similarity properties of streamers at various pressures in air",
    abstract = "Modelling studies are presented of positive streamers developing at various pressures in air in a point-to-plane discharge geometry. The modelling results emphasize that the quenching of the singlet excited states of molecular nitrogen emitting photoionizing radiation is responsible for non-similar behaviour of streamers at pressures higher than approximately 30 Torr. Our modelling results are consistent with recent experimental work showing that streamers have more and thinner channels and branch more frequently at higher (i.e. near atmospheric) pressures than at lower pressures. The results also demonstrate the importance of accounting for effects associated with electrode geometry for the interpretation of experimental studies on similarity properties of streamers at various pressures.",
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    Effects of photoionization on similarity properties of streamers at various pressures in air. / Liu, N.; Pasko, V. P.

    In: Journal of Physics D: Applied Physics, Vol. 39, No. 2, 21.01.2006, p. 327-334.

    Research output: Contribution to journalArticle

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    AU - Pasko, V. P.

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