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Research of the discharge with parameters of lightning channel

  • P. Barvir
  • P. Kubes
  • J. Krawarik
  • M. Scholz
  • L. Karpinski
  • E. Sadowska-Skladnik
  • K. Malinowski
Short Lived Plasmas

Abstract

The experiments were taken place in the High Voltage Laboratory at the Institute of Plasma Physics and Laser Microfussion in Warsaw. We investigated the parameters of discharge (200 A, 60 C) at atmospheric pressure. The visible spectroscopy and high-speed cameras as the main diagnostic tools were used. During the discharge current channel transformations and ball-like structures formation were observed. Lifetime of this balls increases with its diameter. In visible spectra a lot of lines belonging copper none ionized atoms were present. We also found several lines that represent CuII and CuIII emission and a few lines of OI, OII and NI, NII. The plasma temperature and density was calculated assuming the local thermal equilibrium. The records of high-speed cameras were used to determinate the diameter and evolution of plasma channel and to calculate the characteristic speed of plasma transformation. Acquired data provided both to make confrontation of pressures in the plasma and to observe the creation of ball structures From this comparison we may deduce that the atmospheric pressure plays the main role. Magnetic pressure controls the dynamics of the channel in relatively long scales of ms.

PACS

52.80.Mg 

Key words

lightning ball discharge power high-speed camera 

References

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    M. Stenhoff:Ball lightning: an unsolved problem in atmospheric physics; Kluwer Academic, New York 1999.Google Scholar
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    A. K. Amirov, A. V. Bychkov, V. L. Bychkov: 6th International Symposium on Ball Lightning; Belgium 1999.Google Scholar
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    G. A. Kasabov, V. V. Eliseev:Spektropicheskije tablicy dlja nizkotemperaturnoj plazmy; Atomizdat, Moskva 1973.Google Scholar
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    I. P. Stachanov:O fizicheskoi prirode scharavoi molnii; Nauchnyi mir, Moskva 1996.Google Scholar
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    P. Barvir, P. Kubes, J. Kravarik M. Scholz, L. Karpinski: Proc.Plasma 2003; CD-ROM. Poland 2003. P. 6.1.Google Scholar

Copyright information

© Springer 2004

Authors and Affiliations

  • P. Barvir
    • 1
  • P. Kubes
    • 1
  • J. Krawarik
    • 1
  • M. Scholz
    • 2
  • L. Karpinski
    • 2
  • E. Sadowska-Skladnik
    • 3
  • K. Malinowski
    • 3
  1. 1.Faculty of Electrical Engineering, Department of PhysicsCzech Technical UniversityPrague 6Czech Republic
  2. 2.Institute of Plasma Physics and Laser MicrofusionWarsawPoland
  3. 3.The Andrzej Soltan Institute of Nuclear StudiesOtwock-SwierkPoland

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