Computer Science – Numerical Analysis
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..465y&link_type=abstract
Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 465-468.
Computer Science
Numerical Analysis
21
Atmospheric Electricity, Auroral Zones, Ion Beams, Particle Acceleration, Electric Fields, Hydrogen Ions, Numerical Analysis, Oxygen Ions
Scientific paper
Perpendicular accelerations of ions by the auroral electric fields are examined systematically using the test particle approach to assess their contribution to the ion conics observed on high-latitude field lines. The results show (1) that the existence of a nonzero parallel electric field component is a necessary condition for the static auroral electric fields to accelerate ions continuously across auroral field lines; (2) that the highly nonuniform two-dimensional auroral arc electric fields can contribute to conic ions with energy up to a few keV; (3) that the moderately nonuniform two-dimensional electric field of the inverted V scale can contribute to low energy conic ions less than a few tens electron volts; and (4) that the O(+) ions can be accelerated across field lines more efficiently than the H(+) ions, resulting in more energetic and more conic-like O(+) ions than H(+) ions.
Kan Joseph R.
Yang H. W.
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