Simulation of a Cloud-Cloud Collision in an Electron-Positron Plasma

  • T. Kitanishi
  • J.-I. Sakai
  • K.-I. Nishikawa

Abstract

The dynamics of the clouds in magnetized plasmas is one of the basic processes found in many areas ranging from astrophysical to laboratory plasmas. This cloud dynamics in electron-ion and electron-positron plasmas has been investigated theoretically (Peter and Rostoker, 1982) and by using particle simulations (Galvez, 1987; Neubert. et al., 1992; Kitanishi et al., 1994). Results of these simulations have shown that (1) the cloud keeps moving across an ambient magneticfield as E × B drift, (2) electron and ion (positron) charge sheaths expand along the magnetic field, and (3) electromagnetic waves are emitted from the cloud due to the coherent gyration of particles. For the case of electron-positron plasma in strong magnetic field, the kinetic energy of the cloud is very efficiently transformed into the emitted wave energy (Kitanishi et al., 1994).

Keywords

Kinetic Energy Strong Magnetic Field Solar Atmosphere Field Energy Particle Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Buneman, O.: in Computer Space Plasma Physics, Simulation Technique and Softwares, edited by H. Matumoto and Y. Omura (Terra Scientific, Tokyo, 1993), p. 67.Google Scholar
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  3. Kitanishi, T., Sakai, J. I., Nishikawa, K. I., and Zhao, J. (1994) PAFS-28 (preprint).Google Scholar
  4. Neubert, T., Miller, R. H., Buneman, O., and Nishikawa, K. I. (1992) J. Geophys. Res. 97, 12057.ADSCrossRefGoogle Scholar
  5. Peter, W. N, Rostoker, N. (1982) Phys. Fluids 25, 730.ADSMATHCrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • T. Kitanishi
    • 1
  • J.-I. Sakai
    • 1
  • K.-I. Nishikawa
    • 2
  1. 1.Toyama UniversityJapan
  2. 2.Space Physics DepartmentRice UniversityHoustonUSA

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