Controlled electron beam experiments in space and supporting laboratory experiments: a review

摘要: Abstract The injection of energetic charged-particle beams in space represents an exciting area for controlled experiments the Earth's ionosphere and magnetosphere. Under influence a multitude controlling parameters, mono-energetic beam might follow well-defined singleparticle trajectory or it undergo collective beam-plasma effects that substantially modify its energy density distributions. In latter case, one finds possibilities unstable plasma modes. If on other hand maintains single-particle characteristics, can be useful diagnostic tool such applications as geomagnetic conjugate mapping measurement magneticfield-aligned potentials. evolution these concepts, along with developing technology spaceborne accelerators, has ushered basic geoplasma physics previously not available to scientific community. Over past five years this activity brought about important improvements our fundamental understanding processes. This progress been by alone, but synergistic efforts computational physicists, exchange ideas born from laboratory simulations processes involving particle beams. It is aim review paper develop synoptic perspective recent accomplishments, summarize plans recommendations future which will contribute continued growth field.