The plasma environment during particle beam injection into space plasmas. I - Electron beams. II - Charge-neutral beams

Details The plasma environment during particle beam injection into space plasmas. I - Electron beams. II - Charge-neutral beams The plasma environment during particle beam injection into space plasmas. I - Electron beams. II - Charge-neutral beams

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7673p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7673-7704. Research supported by the University of C

Physics

33

Beam Injection, Electron Beams, Plasma Diagnostics, Space Plasmas, Spacecraft Charging, Aerospace Environments, Atmospheric Models, Electrostatics, Plasma Density, Space Charge

Scientific paper

A realistic electrostatic simulation model is used to investigate the plasma environment in the near vicinity of a spacecraft during the injection of electon beams from the spacecraft. The model is described, and the cases of injection into vacuum and into a low-density plasma are addressed. The relationship of the two-dimensional results to the purely field-aligned one-dimensional simulations is discussed. The dependence of the results on the ambient plasma density is investigated. Then, the properties of a charge-neutral beam and the plasma response are examined for the case where the beam has nonzero velocity components parallel and perpendicular to the magnetic field. The parameters used in the simulation are described, and the properties of the beam injection into the vacuum and in the case where a plasma is present are given.

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