Interhemispheric transport of relativistic electron beams

Details Interhemispheric transport of relativistic electron beams Interhemispheric transport of relativistic electron beams

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..581k&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 5, p. 581-584

Physics

Plasma Physics

4

Space Plasma Physics: Numerical Simulation Studies, Space Plasma Physics: Transport Processes, Magnetospheric Physics: Magnetosphere-Inner

Scientific paper

Relativistic electron beam injection simulation results are presented from a new interhemispheric transport model, with a spatial domain reaching from 90 km to 90 km in the conjugate ionospheres. A single beam pulse is injected upward at 700 km during the first time step (10-4s) and allowed to scatter and decay through collisional interactions with neutral particles and the core plasma. The maximum pulse duration for collisional processes to prevail over the wave-beam instabilities is estimated, and the assumed pulse length is well within this limit. For an L=2 field line, the e-folding time of a 5 MeV beam is 265 s, which is much bigger than the bounce period (0.19 s) and comparable to drift period around the Earth.

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