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Atmospheric pressure Townsend discharge in pure nitrogen A test case for Ninf2/inf( A 3 ς u + , v ) kinetics under low E/ N conditions

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    SYSNO ASEP0565854
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleAtmospheric pressure Townsend discharge in pure nitrogen A test case for Ninf2/inf( A 3 ς u + , v ) kinetics under low E/ N conditions
    Author(s) Bílek, Petr (UFP-V) ORCID
    Kuthanová, L. (CZ)
    Hoder, T. (CZ)
    Šimek, Milan (UFP-V) RID, ORCID
    Number of authors4
    Article number084004
    Source TitlePlasma Sources Science & Technology. - : Institute of Physics Publishing - ISSN 0963-0252
    Roč. 31, č. 8 (2022)
    Number of pages22 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsatmospheric pressure Townsend discharge ; dielectric barrier discharge ; kinetic modeling ; molecular nitrogen ; second positive system of N 2
    Subject RIVBL - Plasma and Gas Discharge Physics
    OECD categoryFluids and plasma physics (including surface physics)
    R&D ProjectsGA15-04023S GA ČR - Czech Science Foundation (CSF)
    Method of publishingLimited access
    Institutional supportUFP-V - RVO:61389021
    UT WOS000841605600001
    EID SCOPUS85136642482
    DOI10.1088/1361-6595/ac7ad1
    AnnotationThis work investigates the kinetics of the N2( A3ςu+,v ) state in the atmospheric-pressure Townsend discharge (APTD) operated in a barrier discharge setup in pure nitrogen. To understand the complex nature of the N2( A3ςu+,v ) state we have developed a detailed state-to-state vibrational kinetic model of N2 applicable mainly at low reduced electric fields ( < 200 Td). The kinetic model benefits from the determination of the electric field and the electron density profile using the equivalent electric circuit analysis. The knowledge of both parameters significantly reduces the number of free parameters of the model and thus improves the accuracy of kinetic predictions. The results of the kinetic model are compared with the measured emission spectra of the second positive system and the Herman infrared system of N2. The use of the sensitivity analysis method leads to a better understanding of the role of specific elementary processes in the APTD mechanism and also to the determination of the density of the two lowest vibrational levels of N2( A3ςu+ ), which varies between 1012 and 1014 cm-3 depending on the applied voltage. The determination is important, because the two lowest vibrational levels of N2( A3ςu+ ) are considered to play an important role in the secondary emission of electrons from dielectric surfaces. This work shows that the complex state-to-state kinetic modeling in combination with the phase-resolved emission spectroscopy is the key to a better understanding of the processes responsible for establishing and sustaining the APTD mechanism in nitrogen.
    WorkplaceInstitute of Plasma Physics
    ContactVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Year of Publishing2023
    Electronic addresshttps://iopscience.iop.org/article/10.1088/1361-6595/ac7ad1
Number of the records: 1  

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