Dynamic planar double layers: Filamentary substructures, electron holes and ion heating

Details Dynamic planar double layers: Filamentary substructures, electron holes and ion heating Dynamic planar double layers: Filamentary substructures, electron holes and ion heating

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30ssc11s&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 24, pp. SSC 11-1, CiteID 2262, DOI 10.1029/2003GL018480

Physics

6

Ionosphere: Plasma Waves And Instabilities, Ionosphere: Wave/Particle Interactions, Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Electric Fields (2411), Magnetospheric Physics: Plasma Waves And Instabilities

Scientific paper

Using 2.5-D particle-in-cell (PIC) simulations, the formation of a double layer (DL) and its stability are studied. The ion beam accelerated by the DL generates fluctuations above the ion cyclotron frequency, triggering its fragmentation into substructures (DLSSs) like U- and V-shaped electrostatic shocks. The DL and DLSSs are seen to continually emit electron holes of varied shapes and sizes into the high-potential plasma above them, while below ions are transversely heated.

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