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  • Digitale Medien  (2)
  • 51.50.+v  (1)
  • 52.25Dg  (1)
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Materialart
  • Digitale Medien  (2)
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Breakdown field strength of unitary attaching gases and gas mixtures (1979)
    Springer
    Applied physics 18 (1979), S. 321-333 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 51.50.+v ; 52.20F s ; 52.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract A model is presented, which yields the breakdown field strength for space-chargefree configurations and the corona onset voltage for conditions with space charges in unitary, attaching gases and gas mixtures. It is entirely based on a physical description. Therefore, it does not require form parameters to be adjusted by comparison with experiments. It only necessitates the knwoledge of a set of any three material data out of a list of eight material properties which are available for a large number of gases. The model is applied to SF6 as well as to binary and multiple mixtures of N2, CO2, SF6, C4F6,c-C4F8, C3F8, CBrClF2. The results generally agree to within 10% with experimental data.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00899684
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  • 2
    Digitale Medien
    Digitale Medien
    Particle densities in a decaying SF6 plasma (1978)
    Springer
    Applied physics 16 (1978), S. 425-432 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 52.75Kq ; 52.25Dg ; 52.80Mg
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Particle densities are determined for a decaying axially blown SF6 are between current zero and brekdown, some 100 μs later. During the time of interest, primarily only atoms, diatomic molecules and ions can be built up by reactions. Therefore, in a first approach equilibrium densities are derived for SF6 which has decomposed into its considemic and diatomic components. In a second approach reaction kinetics are considered. It turns out that the development of densities occurs in two steps. During the first approx. 100 μs there is a strong deviation from equilibrium. Afterwards the most abundant particles remain near their partial, diatomic equilibrium values. Near breakdown the degree of ionization is of the order of 1013 cm−3 with the most abundant ions S 2 + and F−. This density is sufficient to distort the applied electric field. Future theories of breakdown in hot gases must take into account this principal difference as compared with the conditions in cold gases.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00885870
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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