Plasma processes driven by current sheets and their relevance to the auroral plasma

Details Plasma processes driven by current sheets and their relevance to the auroral plasma Plasma processes driven by current sheets and their relevance to the auroral plasma

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986itps...14..805s&link_type=abstract

IEEE Transactions on Plasma Science (ISSN 0093-3813), vol. PS-14, Dec. 1986, p. 805-822.

Physics

4

Auroras, Current Sheets, Plasma Interactions, Space Plasmas, Earth Observations (From Space), Magnetohydrodynamic Flow, Planetary Radiation, Plasma Currents, Plasma Layers

Scientific paper

Plasma processes dealing with ac and dc electric fields, the formation of ion beams and conics, and electron acceleration are considered, and similarities between simulation results and satellite-based observations are discussed. Electrostatic shock-type electric fields are found to occur near the current sheet edges, and double layers having upward electric fields form inside the sheet and are distinguishable from the large perpendicular electric fields only in wide sheets with thicknesses much greater than the ion Larmor radius. It is found that the most energetic ions have pitch angles near 90 deg, indicating a large perpendicular acceleration of the ions, and that the downward accelerating electrons inside the sheet are neither monoenergetic nor perfectly field aligned.

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