Physics – Plasma Physics
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.1517c&link_type=abstract
Journal of Geophysical Research, vol. 87, Mar. 1, 1982, p. 1517-1527.
Physics
Plasma Physics
21
Auroral Arcs, Ion Density (Concentration), Plasma Turbulence, Turbulence Effects, Boltzmann Transport Equation, Electrostatics, Inhomogeneity, Ion Cyclotron Radiation, Nonuniform Magnetic Fields, Plasma Physics
Scientific paper
An inverted-V auroral arc structure plasma-kinetic model is extended to phenomenologically include the effects of electrostatic turbulence, with k-parallel/k-perpendicular being much less than unity. It is shown that, unless plasma sheet ions are very much more energetic than the electrons, anomalous resistivity is not a large contributor to parallel electrostatic potential drops, since the support of the observed potential drop requires a greater dissipation of energy than can be provided by the plasma sheet. Wave turbulence can, however, be present, with the ion cyclotron turbulence levels suggested by the ion resonance broadening saturation mechanism of Dum and Dupree (1970) being comparable to those observed on auroral field lines. The diffusion coefficient and net growth rate are much smaller than estimates based solely on local plasma properties.
Chiu Yam T.
Cornwall John M.
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