Physics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.1029n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Feb. 1, 1990, p. 1029-1038.
Physics
27
Electrostatic Waves, Field Aligned Currents, Magnetohydrodynamic Flow, Magnetohydrodynamic Turbulence, Shear Flow, Computerized Simulation, Ion Cyclotron Radiation, Kelvin-Helmholtz Instability
Scientific paper
A spatially two-dimensional electrostatic particle simulation code is used to examine the stability of a plasma equilibrium characterized by a localized transverse dc electric field and a magnetic-field-aligned electron drift for L much less than Lx, where Lx is the simulation length in the x direction and L is the scale length associated with the dc electric field. It is found that the dc electric field and the field-aligned current can together play a synergistic role to enable the excitation of electrostatic waves even when the threshold values of the field-aligned drift and the E x B drift are individually subcritical. The simulation results indicate that a broadband turbulence is associated with such an equilibrium.
Ganguli Gurudas
Lee Young Choon
Nishikawa Ken-Ichi
Palmadesso Peter J.
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